253 results on '"Davis KE"'
Search Results
2. Disparities in the analysis of morphological disparity
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Guillerme, T, Cooper, N, Brusatte, SL, Davis, KE, Jackson, AL, Gerber, S, Goswami, A, Healy, K, Hopkins, MJ, Jones, MEH, Lloyd, GT, O'Reilly, JE, Pate, A, Puttick, MN, Rayfield, EJ, Saupe, EE, Sherratt, E, Slater, GJ, Weisbecker, V, Thomas, GH, Donoghue, PCJ, Guillerme, T, Cooper, N, Brusatte, SL, Davis, KE, Jackson, AL, Gerber, S, Goswami, A, Healy, K, Hopkins, MJ, Jones, MEH, Lloyd, GT, O'Reilly, JE, Pate, A, Puttick, MN, Rayfield, EJ, Saupe, EE, Sherratt, E, Slater, GJ, Weisbecker, V, Thomas, GH, and Donoghue, PCJ
- Abstract
Analyses of morphological disparity have been used to characterize and investigate the evolution of variation in the anatomy, function and ecology of organisms since the 1980s. While a diversity of methods have been employed, it is unclear whether they provide equivalent insights. Here, we review the most commonly used approaches for characterizing and analysing morphological disparity, all of which have associated limitations that, if ignored, can lead to misinterpretation. We propose best practice guidelines for disparity analyses, while noting that there can be no ‘one-size-fits-all’ approach. The available tools should always be used in the context of a specific biological question that will determine data and method selection at every stage of the analysis.
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- 2020
3. 22 Flavored tobacco sales restrictions and youth e-cigarette use by tobacco retailer density
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Melanie Dove, Davis Kevin Gee, and Davis Elisa Tong
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Medicine - Abstract
OBJECTIVES/GOALS: Flavored tobacco sales restrictions (FTSR) may reduce youth tobacco use, but may not be as effective in areas with greater tobacco retailer density (TRD), which is associated with greater tobacco access and more common in low-income areas. We examined the association between FTSRs and e-cigarette use for youth in high and low TRD cities. METHODS/STUDY POPULATION: We analyzed data from the California Healthy Kids Survey using a difference-in-differences (DID) strategy. We compared pre- and post-policy changes in ease of access to e-cigarettes, current use, and ever use one year after implementation among students (9th and 11th graders) attending school in a city with a FTSR (n=20,832) versus without (n=66,126). Separate analyses were conducted for students in cities with low and high TRD, with a median cutoff of 3.3 tobacco retailers per square mile. RESULTS/ANTICIPATED RESULTS: Students attending schools in cities with high TRD (compared with low TRD) had a higher percentage of parents with a high school education or less, and were more likely to identify as Hispanic or Non-Hispanic Asian/Pacific Islander. Among students with low TRD, FTSRs were associated with reduced ease of access to e-cigarettes (DID=0.76, 95% CI: 0.58, 0.99). However, among students with high TRD, FTSRs were associated with increased ease of access (DID: 1.25, 95% CI: 1.02, 1.56) and current use (DID=1.57, 95% CI: 1.31, 1.87). DISCUSSION/SIGNIFICANCE: FTSRs were associated with lower youth e-cigarette access in low, but not high TRD areas. Stronger policies or enforcement may be needed in high TRD areas.
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- 2023
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4. Challenges of health data recording–an Australian perspective
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Pryce, JE, Blake, M, Davis, KE, BEGGS, D, Pryce, JE, Blake, M, Davis, KE, and BEGGS, D
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- 2013
5. A Serbian version of the ANPS and its link to the five-factor model of personality
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Montag Christian, Davis Kenneth L., Lazarevic Ljiljana B., and Knezevic Goran
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affective neuroscience theory ,serbian affective neuroscience personality scales (anps) ,neuroticism extraversion openness personality inventory-revised (neo-pi-r) ,Psychology ,BF1-990 - Abstract
This short communication presents a Serbian version of the Affective Neuroscience Personality Scales (ANPS). The ANPS is a self-report measure assessing individual differences in primary emotional systems as derived from Jaak Panksepp’s Affective Neuroscience Theory. As a recent work by Montag & Panksepp (2017a) confirmed the original demonstration of strong associations between primary emotions and the Five-Factor Model of Personality (Davis et al., 2003) across different cultures (USA, Germany, China), we replicated these findings in a Serbian sample. Moreover, following the idea of a recent commentary of Di Domencio & Ryan (2017) on Montag & Panksepp’s (2017a), we present for the first time detailed associations between Five-Factor Model facets as assessed with the NEO-PI-R and primary emotions.
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- 2019
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6. V3 seroreactivity and sequence variation: Tracking the emergence of V3 genotypic variation in HIV-1-infected patients
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Michael, NL, Davis, KE, Loomis-Price, LD, VanCott, TC, Burke, DS, Redfield, RR, Birx, DL, Michael, NL, Davis, KE, Loomis-Price, LD, VanCott, TC, Burke, DS, Redfield, RR, and Birx, DL
- Abstract
Objective: To investigate the relationship between V3-specific immune responses and viral quasispecies evolution in 10 HIV-1-seropositive patients enrolled in a phase I trial of recombinant gp160. Methods: Serologic responses to the HIV(LAI) V3 loop and autologous V3 loop DNA sequences were sequentially determined over a 3-4-year interval. Results: Six patients either seroconverted or had a ≥ 42-fold boost in titer to the V3 reagent associated with an average of 3.2 amino-acid changes in their autologous V3 loops. Four patients with ≤ 11-fold change in titer to the V3 loop showed an average of 0.75 amino-acid changes. Attempts to measure autologous V3 loop responses in four patients using a peptide enzyme-linked immunosorbent assay technique did not show a distinct binding preference for autologous versus heterologous V3 loop peptides. Thus, we interpret seroreactivity to the heterologous HIV(LAI) V3 loop to reflect the broadness of the V3 immune response rather than a direct measure of epitope-specific Immune pressure. Conclusions: These data suggest that the broadness of serologic responses to viral epitopes are reflected in the rate of evolution of their cognate coding sequences and support the view that the immune response to HIV-1 results in the continuous selection of new viral variants during the course of disease.
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- 1996
7. Episodic-Like Memory for What-Where-Which Occasion is Selectively Impaired in the 3xTgAD Mouse Model of Alzheimer's Disease.
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Davis KE, Easton A, Eacott MJ, and Gigg J
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- 2013
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8. An electronic decision support system to motivate people with severe mental illnesses to quit smoking.
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Brunette MF, Ferron JC, McHugo GJ, Davis KE, Devitt TS, Wilkness SM, Drake RE, Brunette, Mary F, Ferron, Joelle C, McHugo, Gregory J, Davis, Kristin E, Devitt, Timothy S, Wilkness, Sandra M, and Drake, Robert E
- Abstract
Objective: Rates of cigarette smoking are high among people with severe mental illnesses compared with the general population (45%-90% versus 20%). The authors developed a Web-based computer decision support system that is tailored for use by people with cognitive deficits and is designed to stimulate motivation to quit smoking by using evidence-based treatment.Methods: This initial study used a quasi-experimental design to test the decision support system among a convenience sample of 41 smokers with severe mental illnesses. Researchers interviewed participants at baseline and two months later to assess for behaviors indicative of motivation to quit smoking. A negative binomial regression modeled the outcome and controlled for baseline group differences.Results: Participants who used the decision support system were significantly more likely to show any behavioral motivation to quit smoking (such as meet with a clinician to discuss cessation, initiate cessation treatment, or otherwise attempt to quit) (67% versus 35%; χ(2)=4.11, df=41, p=.04). Further, using the decision support system increased by a factor of 2.97, or about 300%, the expected number of ways that a participant showed motivation.Conclusions: The encouraging results of this pilot study indicate that electronic decision supports may facilitate motivation to quit smoking and use of cessation treatment among people with severe mental illnesses. [ABSTRACT FROM AUTHOR]- Published
- 2011
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9. The effect of postoperative range of motion on functional activities after posterior cruciate-retaining total knee arthroplasty.
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Ritter MA, Lutgring JD, Davis KE, Berend ME, Ritter, Merrill A, Lutgring, Joseph D, Davis, Kenneth E, and Berend, Michael E
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Background: Range of motion is recognized as an important indicator of the success of a total knee replacement; however, an optimal range of motion has yet to be defined. This study was designed to determine the optimal range of motion for knee function after total knee arthroplasty with a posterior cruciate-retaining prosthesis.Methods: We retrospectively reviewed 5556 primary total knee arthroplasties performed with posterior cruciate-retaining prostheses between 1983 and 2003. The relationship between postoperative range of motion and pain, walking ability, stair-climbing ability, and knee function scores was examined at three to five years postoperatively. The relationship between a postoperative flexion contracture or hyperextension and knee function was also examined.Results: Patients with 128 degrees to 132 degrees of motion obtained the highest scores for pain, walking, and knee function and the highest Knee Society scores. The outcomes became substantially compromised with motion of <118 degrees . Patients with 133 degrees to 150 degrees of motion had the highest scores for stair-climbing. A postoperative flexion contracture and hyperextension were associated with lower scores for pain, walking, stair-climbing, and knee function.Conclusions: The best functional results following total knee arthroplasty are achieved with 128 degrees to 132 degrees of motion. A postoperative flexion contracture and hyperextension of >or=10 degrees are associated with a poorer outcome except that stair-climbing is improved with more motion. [ABSTRACT FROM AUTHOR]- Published
- 2008
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10. The importance of range of motion after total hip arthroplasty.
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Davis KE, Ritter MA, Berend ME, and Meding JB
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- 2007
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11. Effectiveness and Safety of Reduced-Dose Enoxaparin in Non-ST-Segment Elevation Acute Coronary Syndrome Followed by Antiplatelet Therapy Alone for Percutaneous Coronary Intervention.
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Denardo SJ, Davis KE, and Tcheng JE
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- 2007
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12. The effect of stuffing the patellofemoral compartment on the outcome of total knee arthroplasty.
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Pierson JL, Ritter MA, Keating EM, Faris PM, Meding JB, Berend ME, Davis KE, Pierson, Jeffery L, Ritter, Merrill A, Keating, E Michael, Faris, Philip M, Meding, John B, Berend, Michael E, and Davis, Kenneth E
- Abstract
Background: The effect of so-called stuffing of the patellofemoral compartment at the time of total knee arthroplasty (that is, increasing the anterior patellar displacement, the anteroposterior femoral size, or the combined anteroposterior patellofemoral size) has not been well studied. The purpose of the present study was to evaluate the effect of stuffing the patellofemoral compartment on the outcome of primary total knee arthroplasty.Methods: A retrospective review of 1100 primary total knee arthroplasties that had been performed in 1997 and 1998 was conducted. Eight hundred and thirty arthroplasties (75.5%) met the diagnostic and minimum two-year follow-up criteria for inclusion in this report. Radiographic measurements were made to determine preoperative and postoperative anterior patellar displacement, anteroposterior femoral size, combined anteroposterior patellofemoral size, anterior femoral offset, and posterior femoral offset. Regression analysis was performed to determine the effects of changes in these variables on the range of motion, the Knee Society Knee Score, the Knee Society Function Score, the Knee Society Pain Score, and the rate of lateral retinacular release.Results: Preoperative to postoperative changes in anterior patellar displacement, anteroposterior femoral size, combined anteroposterior patellofemoral size, anterior femoral offset, and posterior femoral offset had no clinically meaningful effect on the range of motion of the knee or on any of the Knee Society scores. Increases in anterior patellar displacement were associated with a lower probability of the need for a lateral retinacular release. Increases in measured anteroposterior femoral size were associated with a higher probability of the need for lateral release. Even when combined, however, these relationships explained only 10.1% of the observed variance in the need for lateral retinacular release. Moreover, analyses indicated that patient gender, large as opposed to medium patellar size, and absolute femoral component size influenced the likelihood of lateral release more than did anterior patellar displacement and measured anteroposterior femoral size.Conclusions: Our findings do not support the widely held belief that stuffing of the patellofemoral joint results in adverse outcomes after total knee arthroplasty. Furthermore, the need for lateral release appears to be multifactorial and likely involves a more complex set of factors. Thus, without evidence of other identifiable causes of failure, we do not recommend revision for the treatment of pain of an overstuffed knee joint. [ABSTRACT FROM AUTHOR]- Published
- 2007
13. Lafora's disease in a dog
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DAVIS, KE, primary, FINNIE, JW, additional, and HOOPER, PT, additional
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- 1990
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14. The effect of femoral notching during total knee arthroplasty on the prevalence of postoperative femoral fractures and on clinical outcome.
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Ritter MA, Thong AE, Keating EM, Faris PM, Meding JB, Berend ME, Pierson JL, Davis KE, Ritter, Merrill A, Thong, Alan E, Keating, E Michael, Faris, Philip M, Meding, John B, Berend, Michael E, Pierson, Jeffery L, and Davis, Kenneth E
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Background: The treatment of a supracondylar femoral fracture following total knee arthroplasty is complicated by the presence of the prosthetic components. Anterior femoral notching during arthroplasty has been implicated as a contributing risk factor for femoral fracture. We retrospectively reviewed the effect of anterior femoral notching on the subsequent occurrence of a periprosthetic supracondylar fracture of the distal aspect of the femur and the outcomes of primary total knee arthroplasty in such patients.Methods: The prevalence and depth of femoral notching were determined on a review of the lateral radiographs by observers blinded to the clinical results of 1089 consecutive total knee replacements performed in 1997 and 1998. Linear and logistic regression modeling was used to analyze the relationship between femoral notching and the prevalence of supracondylar femoral fracture, postoperative range of motion, the Knee Society score, and the Knee Society functional and pain scores.Results: Femoral notching was performed in 325 (29.8%) of the 1089 knees in our series. During an average follow-up period of 5.1 years, only two supracondylar femoral fractures occurred, both in femora treated without notching. Femoral notching was not associated with an increased rate of fracture (p = 1.000) or with significant differences in the measures of outcome (range of motion [p = 0.117], knee score [p = 0.967], functional score [p = 0.861], need for a lateral release [p = 0.234], or postoperative pain [p = 0.948]).Conclusions: This study demonstrated no difference in knees managed with or without notching of the anterior distal aspect of the femur with respect to the occurrence of a supracondylar fracture, range of motion, Knee Society score, Knee Society function, or pain. [ABSTRACT FROM AUTHOR]- Published
- 2005
15. Simultaneous bilateral, staged bilateral, and unilateral total knee arthroplasty. A survival analysis.
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Ritter MA, Harty LD, Davis KE, Meding JB, Berend M, Ritter, Merrill A, Harty, Leesa D, Davis, Kenneth E, Meding, John B, and Berend, Michael
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Background: The rates of perioperative morbidity and mortality are areas of concern associated with simultaneous bilateral total knee replacement. The purpose of this paper was to compare the rates of morbidity and mortality and the clinical outcome in large groups of consecutive patients undergoing simultaneous bilateral total knee replacement, unilateral total knee replacement, or staged bilateral total knee replacement.Methods: A total of 6200 total knee replacements, performed in 3998 patients between 1983 and 2000, consisted of 2050 simultaneous bilateral, 1796 unilateral, and 152 staged bilateral total knee replacements. A review of each group was conducted to compare the rates of morbidity and mortality, the survival of the prosthesis, and the clinical outcome. Kaplan-Meier survival analyses were performed with failure defined as revision because of aseptic loosening and as patient death. Complications and Knee Society scores were compared throughout the fifteen-year follow-up period (average, 4.3 years of follow-up).Results: The unilateral group had significantly lower Knee Society scores than the simultaneous bilateral group (p < 0.0001 up to twelve years, and p = 0.0067 at fifteen years) across all postoperative time-intervals. The percentage of patients who had thrombophlebitis was significantly higher in the simultaneous bilateral group (0.9%) than in the unilateral group (0.3%) (p = 0.0326). No significant differences were found with regard to prosthetic failure, cardiac complications, and the rates of death in the three groups. Ten years postoperatively, the simultaneous bilateral group had a significantly higher rate of patient survival than did the unilateral group (78.6% compared with 72.0%) (p = 0.0062).Conclusions: The significantly higher rate of thrombophlebitis in the simultaneous bilateral group compared with that in the unilateral group may represent a greater risk to those patients. However, we believe that when there are adequate indications for bilateral total knee replacement, simultaneous bilateral arthroplasty is beneficial to patients, with a minimal increase in the risk of death or other complications compared with that associated with unilateral and staged procedures. [ABSTRACT FROM AUTHOR]- Published
- 2003
16. Predicting range of motion after total knee arthroplasty. Clustering, log-linear regression, and regression tree analysis.
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Ritter MA, Harty LD, Davis KE, Meding JB, Berend ME, Ritter, Merrill A, Harty, Leesa D, Davis, Kenneth E, Meding, John B, and Berend, Michael E
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Background: Range of motion is a crucial measure of the outcome of total knee arthroplasty. The purpose of this study was to determine which factors are predictive of the postoperative range of motion.Methods: We retrospectively studied 3066 patients (4727 knees) who had a primary total knee arthroplasty with the same type of implant at the same center between 1983 and 1998. Statistical clustering analysis paired with log-linear regression was used to determine groupings along continuous variables. Regression tree analysis was used to characterize the combinations of variables influencing the postoperative range of motion. The variables considered were preoperative and intraoperative flexion and extension, preoperative alignment, age, gender, and soft-tissue releases.Results: Preoperative flexion was the strongest predictor of the postoperative flexion regardless of preoperative alignment. Other factors that were significantly related to reduced flexion were intraoperative flexion (p < 0.0001), gender (p < 0.0001), preoperative tibiofemoral alignment (p = 0.0005), age (p < 0.0001), and posterior capsular release (p < 0.0001). The removal of posterior osteophytes was related to the greatest increase in postoperative flexion in the group of patients with a varus tibiofemoral alignment preoperatively.Conclusions: The principal predictive factor of the postoperative range of motion was the preoperative range of motion. Removal of posterior osteophytes and release of the deep medial collateral ligament, the semimembranosus tendon, and the pes anserinus tendon in patients with large preoperative varus alignment and the attainment of a good intraoperative range of motion improved the likelihood that a good postoperative range of motion would be achieved. [ABSTRACT FROM AUTHOR]- Published
- 2003
17. Efficacy and safety of minimal dose (< or =1,000 units) unfractionated heparin with abciximab in percutaneous coronary intervention.
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Denardo SJ, Davis KE, Reid PR, Tcheng JE, Denardo, Scott J, Davis, Keith E, Reid, Philip R, and Tcheng, James E
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Abciximab decreases adverse cardiac ischemic events, and in some subgroups, decreases the need for revascularization after percutaneous coronary intervention (PCI). However, abciximab may cause bleeding complications and thrombocytopenia after PCI. We hypothesized that the efficacy and safety of PCI would be maintained, if not improved, when performed using abciximab accompanied by only minimal doses (< or =1,000 U) of unfractionated heparin. In this prospectively designed observational study, we assessed 500 consecutive patients who underwent PCI, consisting of either stent deployment or high-speed rotational atherectomy, and who received abciximab accompanied by only a minimal dose of unfractionated heparin, as directed by a novel dosing strategy: (1) if the patient was previously receiving an infusion of heparin, then it was terminated upon arrival to the cardiac catheterization laboratory, and no further heparin was administered; or (2) if the patient was not receiving an infusion of heparin, then a single bolus infusion of 1,000 U was administered after establishment of vascular access. The median activated clotting time for the patients during PCI was 168 seconds (25% quartiles, 153 to 185). The technical success rate was 99.8%. There were no major adverse clinical events during the 24 hours after PCI. The incidence of non-Q-wave myocardial infarction was 1.6%. The incidences of major and minor bleeding complications were 0.2% and 3.6%, respectively, and the incidence of thrombocytopenia was 2.2%. During the 30 days after PCI, there was 1 major adverse clinical event (0.2%). During the 1 year after PCI, among the remaining patients, there were 92 adverse events (18.4%). We conclude that, in the context of historical data, the efficacy and safety of PCI using either stent deployment or high-speed rotational atherectomy is maintained, if not improved, when performed using abciximab accompanied by only minimal doses of unfractionated heparin. [ABSTRACT FROM AUTHOR]
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- 2003
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18. Interparental violence: the children as victims.
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Davis KE
- Published
- 1988
19. Space-based active optical remote sensing of carbon dioxide column using high-energy two-micron pulsed ipda lidar
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Singh Upendra N., Refaat Tamer F., Ismail Syed, Petros Mulugeta, Davis Kenneth J., Kawa Stephan R., and Menzies Robert T.
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Physics ,QC1-999 - Abstract
Modeling of a space-based high-energy 2-μm triple-pulse Integrated Path Differential Absorption (IPDA) lidar was conducted to demonstrate carbon dioxide (CO2) measurement capability and to evaluate random and systematic errors. A high pulse energy laser and an advanced MCT e-APD detector were incorporated in this model. Projected performance shows 0.5 ppm precision and 0.3 ppm bias in low-tropospheric column CO2 mixing ratio measurements from space for 10 second signal averaging over Railroad Valley (RRV) reference surface.
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- 2018
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20. Development of an advanced Two-Micron triple-pulse IPDA lidar for carbon dioxide and water vapor measurements
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Petros Mulugeta, Refaat Tamer F., Singh Upendra N., Yu Jirong, Antill Charles, Remus Ruben, Taylor Bryant D., Wong Teh-Hwa, Reithmaier Karl, Lee Jane, Ismail Syed, and Davis Kenneth J
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Physics ,QC1-999 - Abstract
An advanced airborne triple-pulse 2-μm integrated path differential absorption (IPDA) lidar is under development at NASA Langley Research Center that targets both carbon dioxide (CO2) and water vapor (H2O) measurements simultaneously and independently. This lidar is an upgrade to the successfully demonstrated CO2 2-μm double-pulse IPDA. Upgrades include high-energy, highrepetition rate 2-μm triple-pulse laser transmitter, innovative wavelength control and advanced HgCdTe (MCT) electron-initiated avalanche photodiode detection system. Ground testing and airborne validation plans are presented.
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- 2018
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21. Technology Advancements for Active Remote Sensing of Carbon Dioxide from Space using the Active Sensing of CO2 Emissions over Nights, Days, and Seasons (ASCENDS) CarbonHawk Experiment Simulator
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Obland Michael D., Campbell Joel, Kooi Susan, Fan Tai-Fang, Carrion William, Hicks Jonathan, Lin Bing, Nehrir Amin R., Browell Edward V., Meadows Byron, and Davis Kenneth J.
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Physics ,QC1-999 - Abstract
This work describes advances in critical lidar technologies and techniques developed as part of the NASA Active Sensing of CO2 Emissions over Nights, Days, and Seasons CarbonHawk Experiment Simulator system for measuring atmospheric column carbon dioxide (CO2) mixing ratios. This work provides an overview of these technologies and results from recent test flights during the NASA Atmospheric Carbon and Transport – America (ACT-America) Earth Venture Suborbital summer 2016 flight campaign.
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- 2018
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22. An outbreak of bovine ephemeral fever in northeast Victoria
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Davis Ke, Campbell J, Shiel Mj, and Davis Gp
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Ephemeral Fever ,Veterinary medicine ,General Veterinary ,biology ,Victoria ,Outbreak ,General Medicine ,biology.organism_classification ,Disease Outbreaks ,Insect Vectors ,Geography ,Bovine ephemeral fever ,Animals ,Cattle - Published
- 1989
23. Guest editorial. Save low-income women and their children first.
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Davis KE, Aguilar MA, and Jackson VH
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- 1998
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24. An outbreak of bovine ephemeral fever in northeast Victoria
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SHIEL, MJ, primary, CAMPBELL, J., additional, DAVIS, KE, additional, and DAVIS, GP, additional
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- 1989
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25. Morphometric Estimation of the Numbers of Granulosa Cells in Preovulatory Follicles of the Ewe
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O'Shea, JD, primary, Wright, PJ, additional, and Davis, KE, additional
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- 1987
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26. Lidar Characterization of Boundary Layer Transport and Mixing for Estimating Urban-Scale Greenhouse Gas Emissions
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Hardesty R. Michael, Brewer W. Alan, Sandberg Scott P., Weickmann Ann M., Shepson Paul B., Cambaliza Maria, Heimburger Alexie, Davis Kenneth J., Lauvaux Thomas, Miles Natasha L., Sarmiento Daniel P., Deng A. J., Gaudet Brian, Karion Anna, Sweeney Colm, and Whetstone James
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Physics ,QC1-999 - Abstract
A compact commercial Doppler lidar has been deployed in Indianapolis for two years to measure wind profiles and mixing layer properties as part of project to improve greenhouse measurements from large area sources. The lidar uses vertical velocity variance and aerosol structure to measure mixing layer depth. Comparisons with aircraft and the NOAA HRDL lidar generally indicate good performance, although sensitivity might be an issue under low aerosol conditions.
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- 2016
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27. Association between oral 5-ASA adherence and health care utilization and costs among patients with active ulcerative colitis
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Mitra Debanjali, Hodgkins Paul, Yen Linnette, Davis Keith L, and Cohen Russell D
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Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Abstract Background Observational cohort study to assess the association between adherence to oral 5-aminosalicylates (5-ASAs) and all-cause costs and health care utilization among patients with active ulcerative colitis (UC) in the United States. Methods Retrospective analysis of insurance claims from June 1997 to August 2006 in the LifeLink Database. Patient criteria: aged 18 or older with one or more claim(s) between June 1997 and August 2005 for a UC diagnosis and at least one oral 5-ASA prescription on or after the first observed UC diagnosis; continuous enrollment for at least 6 months prior to and 12 months following 5-ASA initiation (index date). As a proxy for active disease, patients needed to have at least two UC-specific non-pharmacy claims, at least 30 days of 5-ASA treatment and at least one corticosteroid prescription within the 12-month post-index period. Cumulative exposure to oral 5-ASAs over the 12-month period was calculated using the medication possession ratio (MPR). Patients with an MPR of at least 0.80 were classified as adherent. All-cause medical and pharmacy resource utilization and costs were computed over the 12-month post-index period and compared between adherent and nonadherent patients. Results 1,693 UC patients met study inclusion criteria: 72% were nonadherent to 5-ASA treatment (n = 1,217) and 28% were adherent (n = 476) in the 12-month study period. Compared with nonadherent patients, adherent patients had 31% fewer hospitalizations (P = 0.0025) and 34% fewer emergency department admissions (P = 0.0016). Adherent patients had 25% more pharmacy prescriptions overall (P P P = 0.0002). After adjusting for covariates, total all-cause costs were 29% higher for nonadherent patients than for adherent patients (mean [95% confidence interval]: $13,465 [$13,094, $13,835] vs $17,339 [$17,033, $17,645]). Conclusions Approximately three-quarters of patients with active UC were not adherent with their prescribed doses of oral 5-ASA. Nonadherence was associated with higher total all-cause costs. The key driver of decreased costs among adherent patients was inpatient hospitalizations, which more than offset these patients’ expected higher pharmacy costs.
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- 2012
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28. The inpatient burden of abdominal and gynecological adhesiolysis in the US
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Davis Keith L, Candrilli Sean D, Bapat Bela, Sikirica Vanja, Wilson Malcolm, and Johns Alan
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Adhesions ,adhesiolysis ,abdominal ,gynecological ,burden of illness ,hospitalizations ,Surgery ,RD1-811 - Abstract
Abstract Background Adhesions are fibrous bands of scar tissue, often a result of surgery, that form between internal organs and tissues, joining them together abnormally. Postoperative adhesions frequently occur following abdominal surgery, and are associated with a large economic burden. This study examines the inpatient burden of adhesiolysis in the United States (i.e., number and rate of events, cost, length of stay [LOS]). Methods Hospital discharge data for patients with primary and secondary adhesiolysis were analyzed using the 2005 Healthcare Cost and Utilization Project's Nationwide Inpatient Sample. Procedures were aggregated by body system. Results We identified 351,777 adhesiolysis-related hospitalizations: 23.2% for primary and 76.8% for secondary adhesiolysis. The average LOS was 7.8 days for primary adhesiolysis. We found that 967,332 days of care were attributed to adhesiolysis-related procedures, with inpatient expenditures totaling $2.3 billion ($1.4 billion for primary adhesiolysis; $926 million for secondary adhesiolysis). Hospitalizations for adhesiolysis increased steadily by age and were higher for women. Of secondary adhesiolysis procedures, 46.3% involved the female reproductive tract, resulting in 57,005 additional days of care and $220 million in attributable costs. Conclusions Adhesiolysis remain an important surgical problem in the United States. Hospitalization for this condition leads to high direct surgical costs, which should be of interest to providers and payers.
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- 2011
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29. Evaluation of Sexual Communication Message Strategies
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Khan Munziba, Patel Kajal, Umanzor Cindy, Davis Kevin C, and Evans W Douglas
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Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Parent-child communication about sex is an important proximal reproductive health outcome. But while campaigns to promote it such as the Parents Speak Up National Campaign (PSUNC) have been effective, little is known about how messages influence parental cognitions and behavior. This study examines which message features explain responses to sexual communication messages. We content analyzed 4 PSUNC ads to identify specific, measurable message and advertising execution features. We then develop quantitative measures of those features, including message strategies, marketing strategies, and voice and other stylistic features, and merged the resulting data into a dataset drawn from a national media tracking survey of the campaign. Finally, we conducted multivariable logistic regression models to identify relationships between message content and ad reactions/receptivity, and between ad reactions/receptivity and parents' cognitions related to sexual communication included in the campaign's conceptual model. We found that overall parents were highly receptive to the PSUNC ads. We did not find significant associations between message content and ad reactions/receptivity. However, we found that reactions/receptivity to specific PSUNC ads were associated with increased norms, self-efficacy, short- and long-term expectations about parent-child sexual communication, as theorized in the conceptual model. This study extends previous research and methods to analyze message content and reactions/receptivity. The results confirm and extend previous PSUNC campaign evaluation and provide further evidence for the conceptual model. Future research should examine additional message content features and the effects of reactions/receptivity.
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- 2011
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30. Impact of a parent-child sexual communication campaign: results from a controlled efficacy trial of parents
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Evans W Douglas, Blitstein Jonathan L, Davis Kevin C, and Kamyab Kian
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Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Background Prior research supports the notion that parents have the ability to influence their children's decisions regarding sexual behavior. Yet parent-based approaches to curbing teen pregnancy and STDs have been relatively unexplored. The Parents Speak Up National Campaign (PSUNC) is a multimedia campaign that attempts to fill this void by targeting parents of teens to encourage parent-child communication about waiting to have sex. The campaign follows a theoretical framework that identifies cognitions that are targeted in campaign messages and theorized to influence parent-child communication. While a previous experimental study showed PSUNC messages to be effective in increasing parent-child communication, it did not address how these effects manifest through the PSUNC theoretical framework. The current study examines the PSUNC theoretical framework by 1) estimating the impact of PSUNC on specific cognitions identified in the theoretical framework and 2) examining whether those cognitions are indeed associated with parent-child communication Methods Our study consists of a randomized efficacy trial of PSUNC messages under controlled conditions. A sample of 1,969 parents was randomly assigned to treatment (PSUNC exposure) and control (no exposure) conditions. Parents were surveyed at baseline, 4 weeks, 6 months, 12 months, and 18 months post-baseline. Linear regression procedures were used in our analyses. Outcome variables included self-efficacy to communicate with child, long-term outcome expectations that communication would be successful, and norms on appropriate age for sexual initiation. We first estimated multivariable models to test whether these cognitive variables predict parent-child communication longitudinally. Longitudinal change in each cognitive variable was then estimated as a function of treatment condition, controlling for baseline individual characteristics. Results Norms related to appropriate age for sexual initiation and outcome expectations that communication would be successful were predictive of parent-child communication among both mothers and fathers. Treatment condition mothers exhibited larger changes than control mothers in both of these cognitive variables. Fathers exhibited no exposure effects. Conclusions Results suggest that within a controlled setting, the "wait until older norm" and long-term outcome expectations were appropriate cognitions to target and the PSUNC media materials were successful in impacting them, particularly among mothers. This study highlights the importance of theoretical frameworks for parent-focused campaigns that identify appropriate behavioral precursors that are both predictive of a campaign's distal behavioral outcome and sensitive to campaign messages.
- Published
- 2010
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31. Correlations between Diffusion Tensor Imaging (DTI) and Magnetic Resonance Spectroscopy (1H MRS) in schizophrenic patients and normal controls
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Ng Johnny, Carpenter David, Hajianpour Arash, Stewart Daniel, Ernst Thomas, Chang Linda, Shungu Dikoma, Friedman Joseph, Tang Cheuk Y, Mao Xiangling, Hof Patrick R, Buchsbaum Monte S, Davis Kenneth, and Gorman Jack M
- Subjects
Psychiatry ,RC435-571 - Abstract
Abstract Background Evidence suggests that white matter integrity may play an underlying pathophysiological role in schizophrenia. N-acetylaspartate (NAA), as measured by Magnetic Resonance Spectroscopy (MRS), is a neuronal marker and is decreased in white matter lesions and regions of axonal loss. It has also been found to be reduced in the prefrontal and temporal regions in patients with schizophrenia. Diffusion Tensor Imaging (DTI) allows one to measure the orientations of axonal tracts as well as the coherence of axonal bundles. DTI is thus sensitive to demyelination and other structural abnormalities. DTI has also shown abnormalities in these regions. Methods MRS and DTI were obtained on 42 healthy subjects and 40 subjects with schizophrenia. The data was analyzed using regions of interests in the Dorso-Lateral Prefrontal white matter, Medial Temporal white matter and Occipital white matter using both imaging modalities. Results NAA was significantly reduced in the patient population in the Medial Temporal regions. DTI anisotropy indices were also reduced in the same Medial Temporal regions. NAA and DTI-anisotropy indices were also correlated in the left medial temporal region. Conclusion Our results implicate defects in the medial temporal white matter in patients with schizophrenia. Moreover, MRS and DTI are complementary modalities for the study of white matter disruptions in patients with schizophrenia.
- Published
- 2007
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32. Improving Access and Timeliness of Employee Annual Exams.
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Davis KE, Huntsman-Jones CE, Wixom L, Twitchell JD, Clifton J, and West M
- Abstract
Background: Access to preventive healthcare improves health outcomes and reduces risk of chronic disease. Annual examinations were integrated into an underutilized clinic at the University of Utah to improve access to preventive care., Methods: Nurse practitioners conducted these examinations, which included history, physical examination, age-based screenings, and immunizations. The service was part of a wellness program offering health premium discounts for participants. With employee permission, visit documentation was shared with primary care providers (PCPs) or used to help establish a PCP. Human resources received monthly reports of participating employees identification numbers, validating participation in order to receive premium discount., Results: In 2023, 373 examinations were performed, including 719 preventive services and screenings, with 143 referrals for specialty and primary care. Patient satisfaction remained high throughout implementation., Conclusion/application to Practice: This initiative effectively increased access to preventive care for employees, demonstrating the feasibility of offering annual examinations in worksite clinics. The program addresses common barriers to preventive care such as long wait times, PCP shortages, and travel time to appointments., Competing Interests: Conflict of InterestThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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33. Two-dimensional echocardiographic right heart ratios for assessment of right heart size in dogs: Reference intervals and reproducibility.
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Sankisov JN, Visser LC, Davis KE, Boon JA, Ross ES, and Laws AC
- Abstract
Background: Reference intervals for simple body weight-independent measurements of right heart size and function are limited., Objectives: Generate reference intervals for measurements of right heart size indexed to the long-axis aortic valve diameter (AoD) or corresponding left heart structure (right heart ratios) and describe the reproducibility of these indices., Animals: Ninety healthy adult dogs of variable body weight., Methods: Prospective study. All dogs underwent an echocardiogram performed by the same operator. Numerous linear 2-dimensional measurements of right heart size and function from different imaging planes were performed. Eight dogs underwent repeated echocardiograms by the same operator on 3 different days, and 3 different operators performed repeated echocardiograms on the same day. Reference intervals were generated using the Clinical Laboratory Standards Institute method. Reproducibility was quantitated using coefficients of variation (CVs) and reproducibility coefficients., Results: Reference intervals for right heart ratios were generated and allow simple assessments of right heart size and function that do not require a scaling exponent or body weight table. Right heart ratios did not show clinically relevant associations with body weight. All CVs were <22.6%. In general, CVs for right heart measurements indexed to AoD were lower compared with right heart measurements indexed to the corresponding left heart structure., Conclusions and Clinical Importance: Reference intervals for simple body weight-independent right heart ratios are available to help detect abnormalities of right heart size and function. Reproducibility coefficients might be useful to help identify meaningful changes in right heart size during serial evaluations., (© 2024 The Author(s). Journal of Veterinary Internal Medicine published by Wiley Periodicals LLC on behalf of American College of Veterinary Internal Medicine.)
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- 2024
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34. Yoga for Veterans with PTSD: Intervention Feasibility, Changes in PTSD Symptom Severity, and Psychological and Physiological Health-Related Fitness Outcomes.
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Bollaert RE, Bennett MM, Davis KE, Hillard CJ, Whittle J, Franco Z, Broadwell S, and Fitzgerald J
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- Humans, Male, Female, Middle Aged, Adult, Treatment Outcome, Severity of Illness Index, Physical Fitness, Mindfulness methods, Yoga, Stress Disorders, Post-Traumatic therapy, Stress Disorders, Post-Traumatic psychology, Stress Disorders, Post-Traumatic physiopathology, Veterans psychology, Feasibility Studies
- Abstract
Posttraumatic stress disorder (PTSD) is a burdensome disorder associated with lower quality of life and increased morbidity and mortality. Veterans are particularly at risk for PTSD resulting from experiencing traumatic events during military service. Current treatments for PTSD often fail to remediate symptoms and are associated with high dropout rates; therefore, complementary and integrative health approaches, such as yoga, are being considered to treat PTSD-related symptoms. The present study investigated the feasibility of a 12-week, 1-hour/week, in-person, trauma-informed mindful resilience yoga intervention for improving PTSD symptom severity and secondary psychological outcomes (e.g., physical and mental health, sleep, mindfulness, and self-efficacy), physiological health-related fitness outcomes (e.g., body composition and muscular strength), and physical activity outcomes (e.g., accelerometry) in a sample of veterans with PTSD. Results demonstrated the intervention to be feasible, with 12 participants (9 male, 3 female; mean age 50.3) completing the program (10 participants completed ≥ 75% of the 12 sessions). Statistically significant improvement was demonstrated in the "nonjudging of inner experience" aspect of mindfulness (p = 0.005, d = 1.280). Although not considered statistically significant (p > 0.008), the majority of outcomes demonstrated trending improvement from pre- to postintervention, with small to large Cohen's d effect sizes. The novelty of this study is represented by the trending improvements in physiological health-related fitness outcomes, with lean mass and handgrip strength demonstrating small effect sizes (d = 0.243 and d = 0.267, respectively). Our results extend the existing literature on the feasibility and potential effectiveness of yoga as a complementary or integrative therapy for PTSD in the veteran population.
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- 2024
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35. Environmental and Interpersonal Factors Impact the Developing Brain.
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Benjamin TA, Bennett MM, and Davis KE
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- Humans, Interpersonal Relations, Environment, Animals, Brain growth & development, Brain physiology
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Competing Interests: The authors declare no competing financial interest.
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- 2024
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36. Factors associated with food security of Texas Woman's University freshmen.
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Brito-Silva FK, Wang W, Moore CE, and Davis KE
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- Female, Humans, Universities, Texas, Cross-Sectional Studies, Food Security, Socioeconomic Factors, Food Supply, Students
- Abstract
Objective: To investigate what factors are associated with food insecurity (FI) among freshman students and identify potential solutions., Participants: 73 freshman students., Methods: Cross-sectional, Internet survey-based study. Fisher's Exact tests examined factors associated with food security (FS); Cohen's Kappa assessed the agreement between FI scores and self-assessment; thematic analysis used Nvivo 12., Results: FI was 54.2% among the diverse students (65% non-white). Factors associated with FS included mother with a college degree (p = .018); father employed full-time (p < .001); identifying one's family financial situation as better than others (p = < .001); not obtaining personal student loans (p = 0.022). Students with FI tended to overestimate their FS status. Suggested solutions for FI included: improved finances, improved food accessibility, improved cooking skills., Conclusions: Future interventions should target freshmen who obtain personal student loans or have parents with less than a college degree or unstable employment status. (148).
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- 2024
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37. Decoupling speciation and extinction reveals both abiotic and biotic drivers shaped 250 million years of diversity in crocodile-line archosaurs.
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Payne ARD, Mannion PD, Lloyd GT, and Davis KE
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- Animals, Phylogeny, Genetic Speciation, Biodiversity, Fossils, Alligators and Crocodiles
- Abstract
Whereas living representatives of Pseudosuchia, crocodylians, number fewer than 30 species, more than 700 pseudosuchian species are known from their 250-million-year fossil record, displaying far greater ecomorphological diversity than their extant counterparts. With a new time-calibrated tree of >500 species, we use a phylogenetic framework to reveal that pseudosuchian evolutionary history and diversification dynamics were directly shaped by the interplay of abiotic and biotic processes over hundreds of millions of years, supported by information theory analyses. Speciation, but not extinction, is correlated with higher temperatures in terrestrial and marine lineages, with high sea level associated with heightened extinction in non-marine taxa. Low lineage diversity and increased speciation in non-marine species is consistent with opportunities for niche-filling, whereas increased competition may have led to elevated extinction rates. In marine lineages, competition via increased lineage diversity appears to have driven both speciation and extinction. Decoupling speciation and extinction, in combination with ecological partitioning, reveals a more complex picture of pseudosuchian evolution than previously understood. As the number of species threatened with extinction by anthropogenic climate change continues to rise, the fossil record provides a unique window into the drivers that led to clade success and those that may ultimately lead to extinction., (© 2023. The Author(s).)
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- 2024
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38. Neural processes of emotional conflict detection and prediction of posttraumatic stress disorder symptom clusters in traumatic injury survivors.
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Davis KE, Tomas CW, Webb EK, Huggins AA, deRoon-Cassini TA, Larson CL, and Fitzgerald JM
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Objective: Given the prevalence and significant burden of posttraumatic stress disorder (PTSD), identifying early predictors of symptom development following trauma is critical. PTSD is a heterogeneous disorder comprised of distinct symptom clusters-reexperiencing, avoidance, negative mood, and hyperarousal-that contribute to the broad range of possible symptom profiles. Affective and attentional regulation processes, such as emotional conflict detection, are impaired in individuals with PTSD; however, the neural mechanisms underlying these alterations and their predictive utility for the development of PTSD symptoms remain unclear., Method: Traumatic injury survivors ( N = 49) without traumatic brain injury were recruited from the emergency department of an urban, Level-1 trauma center. Within 1 month of trauma exposure, participants completed a well-characterized emotional conflict task during a functional magnetic resonance imaging scan. Participants returned 6-month later for a clinical assessment of PTSD symptoms. Using a region-of-interest mask derived from whole-brain voxelwise analyses during emotional conflict detection (vs. no emotional conflict detection) we examined whether differential neural activity predicted 6-month PTSD symptom cluster severity., Results: Greater activation of the right middle frontal gyrus during emotional conflict detection prospectively predicted lower PTSD avoidance symptom severity 6 months later (above and beyond the effects of self-reported baseline PTSD and depressive symptoms, previous traumatic life events, racial discrimination, age, sex, and injury severity)., Conclusions: Neural processes of emotion conflict detection measured in the early aftermath of a potentially traumatic event are useful as predictors for the development of PTSD symptoms. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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- 2023
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39. Neural Correlates of Reward Processing in the Onset, Maintenance, and Treatment of Posttraumatic Stress Disorder.
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Bennett MM, Davis KE, and Fitzgerald JM
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- Humans, Emotions, Anhedonia, Reward, Stress Disorders, Post-Traumatic, Depressive Disorder, Major
- Abstract
Posttraumatic stress disorder (PTSD) is a prevalent, debilitating, and heterogeneous psychiatric condition marked by both exaggerated threat responding and diminished positive affect. While symptom profiles of PTSD differ across individuals, symptoms also vary within individuals over the course of illness. Functional magnetic resonance imaging studies have provided crucial insights into the neurobiology of heightened threat responsivity in PTSD, which has aided in identifying neurobiological risk factors and treatment targets for this disorder. Despite this demonstrated utility, the application of functional magnetic resonance imaging to understanding deficits in reward responsivity in PTSD remains underexplored. Significantly, over 60% of individuals with PTSD experience anhedonia, or an inability to feel pleasure, which may reflect reward processing deficits. To better understand the neural underpinnings of reward deficits and their relevance to the onset, maintenance, and treatment of PTSD, we reviewed the functional magnetic resonance imaging literature through the framework of disease prognosis. Here, we provide insights on whether reward deficits are central to PTSD or are better explained by comorbid major depressive disorder, and we clarify how reward-related deficiencies in PTSD fit into the context of more intensely studied threat-related deficits., (Copyright © 2023 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
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40. Speciation across the Earth driven by global cooling in terrestrial orchids.
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Thompson JB, Davis KE, Dodd HO, Wills MA, and Priest NK
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- Animals, Phylogeny, Temperature, Geography, Genetic Speciation, Cold Temperature, Biodiversity
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Although climate change has been implicated as a major catalyst of diversification, its effects are thought to be inconsistent and much less pervasive than localized climate or the accumulation of species with time. Focused analyses of highly speciose clades are needed in order to disentangle the consequences of climate change, geography, and time. Here, we show that global cooling shapes the biodiversity of terrestrial orchids. Using a phylogeny of 1,475 species of Orchidoideae, the largest terrestrial orchid subfamily, we find that speciation rate is dependent on historic global cooling, not time, tropical distributions, elevation, variation in chromosome number, or other types of historic climate change. Relative to the gradual accumulation of species with time, models specifying speciation driven by historic global cooling are over 700 times more likely. Evidence ratios estimated for 212 other plant and animal groups reveal that terrestrial orchids represent one of the best-supported cases of temperature-spurred speciation yet reported. Employing >2.5 million georeferenced records, we find that global cooling drove contemporaneous diversification in each of the seven major orchid bioregions of the Earth. With current emphasis on understanding and predicting the immediate impacts of global warming, our study provides a clear case study of the long-term impacts of global climate change on biodiversity.
- Published
- 2023
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41. The Baby Bites Text Messaging Project with randomized controlled trial: texting to improve infant feeding practices.
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Davis KE, Klingenberg A, Massey-Stokes M, Habiba N, Gautam R, Warren C, and Yeatts P
- Abstract
Background: Rapid weight gain and overweight in infancy are associated with childhood obesity. Thus, effective, accessible interventions to promote healthy infant feeding practices to prevent early obesity are essential., Methods: This mixed-methods study involved diverse parents of infants in an urban, low-income pediatric clinic. Qualitative interviews explored parental attitudes towards feeding, early obesity, and communication with the pediatrician. A pilot, randomized controlled trial (RCT) informed by feedback provided by clinic parents compared text messages delivered for 12 months promoting healthy feeding practices to usual care to prevent early pediatric obesity. A computer-generated randomization schedule with balanced distribution for sex was used to place infants into groups. Weight-for-length percentiles and z-scores and feeding practices were measured at 0-2 weeks (baseline), 2-4 months, 6-9 months, and 12 months. Interviews were recorded, transcribed, and coded using thematic analysis. Weight for length percentile, Weight for length z scores, and feeding practices were compared between groups using repeated measures mixed analysis of variance (ANOVA)., Results: Participants in the interviews were 15 parents of infants less than 1 month old. RCT participants were 38 parents of newborns (17 control; 21 intervention). Most parents in the qualitative evaluation viewed breastfeeding positively but also discussed barriers. Most also wanted practical information regarding infant feeding. There were no differences in weight-for-length percentile (F=0.52; P=0.60) or z-scores (F=0.7922; P=0.79), breastfeeding persistence χ
2 [1] =1.45, P=0.23, or age of introduction of solids in the intervention (statistical analysis not possible due to low counts) compared to the control group; however, low response to surveys limited the study's power., Conclusions: Text messaging has potential to extend the healthcare provider's communication beyond clinic. However, texting interventions should be flexible to mitigate barriers such as loss of phone service and challenges customizing messages to parent needs., Competing Interests: Conflicts of Interest: The authors have completed the ICMJE uniform disclosure form (available at https://mhealth.amegroups.com/article/view/10.21037/mhealth-22-31/coif). The authors have no conflicts of interest to declare., (2023 mHealth. All rights reserved.)- Published
- 2023
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42. Limited recovery following a massive seagrass decline in subarctic eastern Canada.
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Leblanc ML, O'Connor MI, Kuzyk ZZA, Noisette F, Davis KE, Rabbitskin E, Sam LL, Neumeier U, Costanzo R, Ehn JK, Babb D, Idrobo CJ, Gilbert JP, Leblon B, and Humphries MM
- Subjects
- Climate Change, Biomass, Temperature, Ecosystem, Zosteraceae
- Abstract
Over the last few decades, there has been an increasing recognition for seagrasses' contribution to the functioning of nearshore ecosystems and climate change mitigation. Nevertheless, seagrass ecosystems have been deteriorating globally at an accelerating rate during recent decades. In 2017, research into the condition of eelgrass (Zostera marina) along the eastern coast of James Bay, Canada, was initiated in response to reports of eelgrass decline by the Cree First Nations of Eeyou Istchee. As part of this research, we compiled and analyzed two decades of eelgrass cover data and three decades of eelgrass monitoring data (biomass and density) to detect changes and assess possible environmental drivers. We detected a major decline in eelgrass condition between 1995 and 1999, which encompassed the entire east coast of James Bay. Surveys conducted in 2019 and 2020 indicated limited changes post-decline, for example, low eelgrass cover (<25%), low aboveground biomass, smaller shoots than before 1995, and marginally low densities persisted at most sites. Overall, the synthesized datasets show a 40% loss of eelgrass meadows with >50% cover in eastern James Bay since 1995, representing the largest scale eelgrass decline documented in eastern Canada since the massive die-off event that occurred in the 1930s along the North Atlantic coast. Using biomass data collected since 1982, but geographically limited to the sector of the coast near the regulated La Grande River, generalized additive modeling revealed eelgrass meadows are affected by local sea surface temperature, early ice breakup, and higher summer freshwater discharge. Our results caution against assuming subarctic seagrass ecosystems have avoided recent global declines or will benefit from ongoing climate warming., (© 2022 John Wiley & Sons Ltd.)
- Published
- 2023
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43. Ultraviolet-A Light and Negative-Pressure Wound Therapy to Accelerate Wound Healing and Reduce Bacterial Proliferation.
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Davis KE, Bills J, Noble D, Crisologo PA, and Lavery LA
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- Humans, Animals, Swine, Wound Healing, Skin Transplantation, Cell Proliferation, Negative-Pressure Wound Therapy methods, Orthopedic Procedures
- Abstract
Background: Ultraviolet (UV)-A therapy is a simple, inexpensive, and effective modality for wound healing, with tremendous potential to improve healing and reduce clinical infections in a number of clinical settings. To date, application of UV-A relies on bulky and hard-to-dose lamps that provide inconsistent therapy, thus making it difficult to apply therapy that is appropriate for the patient., Methods: This study was designed to test the effectiveness of a novel wound therapy device that combines UV-A with traditional negative-pressure wound therapy (NPWT) to promote wound healing. Furthermore, we tested the ability of fiberoptic UV-A delivery to inhibit bacterial proliferation. Finally, we assayed the level of DNA damage that results from UV-A as compared to established UV-C therapies. Wound healing studies were performed in a porcine model using an articulated therapy arm that allows for continued therapy administration over an extended time course. Negative-pressure wound therapy was administered alone or with UV-A fiberoptic therapy for 2 weeks. Dressings were changed twice a week, at which time wound area was assessed., Results: Data demonstrate that UV-A with NPWT treatment of wounds results in greater healing than NPWT alone. Using the same therapy device, we demonstrate that exposure of Staphylococcus aureus and Pseudomonas aeruginosa to fiberoptic UV-A results in decreased colony area and number of both bacterial strains. Finally, we show that UV-A induces minimal DNA damage in human fibroblasts and no more DNA damage in wound tissue as compare to intact skin., Conclusions: These data demonstrate that UV-A can decrease bacterial proliferation and promote wound healing when coupled with NPWT.
- Published
- 2023
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44. Serum Cholesterol Differences Between Statin Users Who Take Dietary Supplements and Those Who Do Not: NHANES 2013-2018.
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MacDonald TS, Davis KE, Tucker WJ, and Miketinas DC
- Abstract
Background: Cardiovascular disease (CVD) is the leading cause of mortality in the United States and statins are the most commonly prescribed medication. It is important to understand the potential impact supplements may have when taken in combination with statins on serum lipid outcomes., Objectives: To evaluate the differences in the concentrations of cholesterol, triacylglycerol (TAG), and HbA1c between adults who use statins alone and those who combine statins and dietary supplements., Methods: A cross-sectional analysis using data from US adults aged ≥20 years who participated in the NHANES (2013-2018). The serum concentrations of lipids and the HbA1c levels were compared using independent sample t-tests. All analyses were adjusted for the complex survey design and used appropriate sample weights., Results: Of 16,327 participants included in this analysis, 13% reported the use of statins alone, and 8.8% used statins and dietary supplements. Statin users who used dietary supplements tended to be women (50.5%), aged 65.8 ± 0.4 years, and were more likely to be White (77.4%). Participants who used statins in combination with dietary supplements were less likely to have higher levels of total cholesterol (5.1% ± 1.4% vs. 15.6% ± 2.7%, P < 0.001), HbA1c (6.0% ± 0.1% vs. 6.3% ± 0.1%, P < 0.05), and HDL cholesterol (50 ± 1.3 vs. 47 ± 0.8 mg/dL, P < 0.05) than those who used statins alone. No significant differences were identified between the two groups for LDL cholesterol and TAG concentrations., Conclusions: Statin users who coingested dietary supplements were less likely to have high levels of total cholesterol and HbA1c and greater HDL levels than statin users who did not take dietary supplements. Dietary intake, lifestyle choices, and other confounders may have influenced the observed outcome differences for those who took dietary supplements with statins and those who did not., (© 2023 Published by Elsevier Inc. on behalf of American Society for Nutrition.)
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- 2022
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45. A Comparison of Pathogens in Skin and Soft-Tissue Infections and Pedal Osteomyelitis in Puncture Wound Injuries Affecting the Foot.
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Truong DH, Fontaine J, Malone M, Wukich DK, Davis KE, and Lavery LA
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- Humans, Staphylococcus aureus, Punctures, Anti-Bacterial Agents therapeutic use, Soft Tissue Infections drug therapy, Osteomyelitis etiology, Osteomyelitis drug therapy, Skin Diseases, Bacterial drug therapy, Diabetes Mellitus, Staphylococcal Infections drug therapy
- Abstract
Background: To compare pathogens involved in skin and soft-tissue infections (SSTIs) and pedal osteomyelitis (OM) in patients with and without diabetes with puncture wounds to the foot., Methods: We evaluated 113 consecutive patients between June 1, 2011, and March 31, 2019, with foot infection (SSTIs and OM) from a puncture injury sustained to the foot. Eighty-three patients had diabetes and 30 did not. We evaluated the bacterial pathogens in patients with SSTIs and pedal OM., Results: Polymicrobial infections were more common in patients with diabetes mellitus (83.1% versus 53.3%; P = .001). The most common pathogen for SSTIs and OM in patients with diabetes was Staphylococcus aureus (SSTIs, 50.7%; OM, 32.3%), whereas in patients without diabetes it was Pseudomonas (25%) for SSTIs. Anaerobes (9.4%) and fungal infection (3.1%) were uncommon. Pseudomonas aeruginosa was identified in only 5.8% of people with diabetes., Conclusions: The most common bacterial pathogen in both SSTIs and pedal OM was S aureus in patients with diabetes. Pseudomonas species was the most common pathogen in people without diabetes with SSTIs.
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- 2022
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46. Lost, gained, and regained functional and phylogenetic diversity of European mammals since 8000 years ago.
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Hatfield JH, Davis KE, and Thomas CD
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- Animals, Biota, Europe, Humans, Phylogeny, Biodiversity, Mammals
- Abstract
Mammals have experienced high levels of human-mediated extirpations but have also been widely introduced to new locations, and some have recovered from historic persecution. Both of these processes-losses and gains-have resulted in concern about functional losses and changes in ecological communities as new ecological states develop. The question of whether species turnover inevitably leads to declines in functional and phylogenetic diversity depends, however, on the traits and phylogenetic distinctiveness of the species that are lost, gained, or regained. Comparing ~8000 years ago with the last century, we show that extirpations and range retractions have indeed reduced the functional and phylogenetic diversity of mammals in most European regions (countries and island groups), but species recoveries and the introduction of non-native species have increased functional and phylogenetic diversity by equivalent or greater amounts in many regions. Overall, across Europe, species richness increased in 41 regions over the last 8000 years and declined in 1; phylogenetic diversity increased in 33 and declined in 12, while functional diversity results showed 20 increases and 25 decreases. The balance of losses (extirpations) and gains (introductions, range expansions) has, however, led to net increases in functional diversity on many islands, where the original diversity was low, and across most of western Europe. Historically extirpated mega- and mesofaunal species have recolonized or been reintroduced to many European regions, contributing to recent functional and phylogenetic diversity recovery. If conservation rewilding projects continue to reintroduce regionally extirpated species and domestic descendants of "extinct" species to provide replacement grazing, browsing, and predation, there is potential to generate net functional and phylogenetic diversity gains (relative to 8000 years ago) in most European regions., (© 2022 The Authors. Global Change Biology published by John Wiley & Sons Ltd.)
- Published
- 2022
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47. Ecological Transitions and the Shape of the Decapod Tree of Life.
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Davis KE, De Grave S, Delmer C, Payne ARD, Mitchell S, and Wills MA
- Subjects
- Animals, Ecosystem, Fresh Water, Phylogeny, Biological Evolution, Decapoda genetics
- Abstract
Understanding the processes that shaped the distribution of species richness across the Tree of Life is a central macroevolutionary research agenda. Major ecological innovations, including transitions between habitats, may help to explain the striking asymmetries of diversity that are often observed between sister clades. Here, we test the impact of such transitions on speciation rates across decapod crustaceans, modeling diversification dynamics within a phylogenetic framework. Our results show that, while terrestrial lineages have higher speciation rates than either marine or freshwater lineages, there is no difference between mean speciation rates in marine and freshwater lineages across Decapoda. Partitioning our data by infraorder reveals that those clades with habitat heterogeneity have higher speciation rates in freshwater and terrestrial lineages, with freshwater rates up to 1.5 times faster than marine rates, and terrestrial rates approximately four times faster. This averaging out of marine and freshwater speciation rates results from the varying contributions of different clades to average speciation rates. However, with the exception of Caridea, we find no evidence for any causal relationship between habitat and speciation rate. Our results demonstrate that while statistical generalizations about ecological traits and evolutionary rates are valuable, there are many exceptions. Hence, while freshwater and terrestrial lineages typically speciate faster than their marine relatives, there are many atypically slow freshwater lineages and fast marine lineages across Decapoda. Future work on diversification patterns will benefit from the inclusion of fossil data, as well as additional ecological factors., (© The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Integrative and Comparative Biology.)
- Published
- 2022
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48. College Campus Food Pantry Program Evaluation: What Barriers Do Students Face to Access On-Campus Food Pantries?
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Brito-Silva FK, Wang W, Moore CE, Warren C, Miketinas DC, Tucker WJ, and Davis KE
- Subjects
- Cross-Sectional Studies, Female, Humans, Students, Universities, Food Assistance, Food Supply
- Abstract
The purpose of this study was to explore barriers Texas Woman's University (TWU) students face in accessing on-campus food pantries. This cross-sectional, survey-based study was conducted in Fall 2021. Students' use of the food pantries and barriers to utilization, including qualitative questions, were evaluated using descriptive statistics and thematic analyses. Students ( n = 529) completed the survey. Despite a high prevalence of food insecurity (49.2%), most students reported never using the pantries (89.8%). Almost half of the students were unaware that these pantries existed on campus (47.8%). More than one in four students believed there were barriers to accessing the pantries, with time tissues, lack of transportation, limited food pantry hours of operation, and social stigma most commonly cited as major barriers to access. Food insecurity remains an urgent problem at TWU since the prevalence has remained high since 2019 despite the institutions' efforts to reduce it. One of those resources has not been utilized as expected, which might impede improvements in food security among students. TWU on-campus food pantries can use these findings to address major barriers by offering after-hours access through the libraries or campus police, partnering with public transportation, and normalizing accessing food assistance.
- Published
- 2022
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49. Risk Assessment of Human Papillomavirus-Positive Cytology-Negative Cervical Cancer Screening in Black and White Women.
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Miller DL, Graham A, Davis KE, Kaur H, White M, Maleki Z, and Rodriguez EF
- Subjects
- Colposcopy, Early Detection of Cancer methods, Female, Humans, Papanicolaou Test, Papillomaviridae, Pregnancy, Retrospective Studies, Risk Assessment, Vaginal Smears, Alphapapillomavirus, Papillomavirus Infections, Uterine Cervical Neoplasms
- Abstract
Objectives: As we move toward human papillomavirus (HPV) only as the preferred cervical cancer screening method, we performed a retrospective analysis of Black and White women with negative cytology (Papanicolaou negative [PAPneg]) and positive high-risk HPV (hrHPV) (HPVpos) results and determined follow-up., Methods: We searched our pathology data system for patients with PAPneg/HPVpos results (2017-2019). Follow-up data were reviewed (39 months), and a comparison among race was performed., Results: In total, 1,728 patients were identified (Black, 53%; White, 47%). Twenty-nine percent of the patients had no follow-up with no difference among the races. HPV 16 was more common among Whites (P < .01), while non-16/18 hrHPV was more common among Black patients (P = .01). A total of 30 (3.3%) Black and 26 (3.2%) White patients were diagnosed with cervical intraepithelial neoplasia grade 2/3 (CIN 2/3). More White women were diagnosed on biopsy alone (negative endocervical curettage) compared with Black women (20 vs 9, P < .01). Meanwhile, there were 21 Black and 6 White women with CIN 2/3 on endocervical curettage (P = .01)., Conclusions: Follow-up of women with PAPneg/HPVpos remains a challenge. There was no disparity in follow-up when cohorts were compared. However, Black women had higher numbers of high-grade intraepithelial lesions on endocervical curettage., (© American Society for Clinical Pathology, 2021. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2022
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50. REPRINT OF: Physical and Mental Health Effects of Intimate Partner Violence for Men and Women.
- Author
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Coker AL, Davis KE, Arias I, Desai S, Sanderson M, Brandt HM, and Smith PH
- Abstract
Editor's Note: This article is a reprint of a previously published article. For citation purposes, please use the original publication details: Coker AL, Davis KE, Arias I, et al. Physical and mental health effects of intimate partner violence for men and women. Am J Prev Med. 1985;1(6):1-8., Background: Few population-based studies have assessed the physical and mental health consequences of both psychological and physical intimate partner violence (IPV) among women or men victims. This study estimated IPV prevalence by type (physical, sexual, and psychological) and associated physical and mental health consequences among women and men., Methods: The study analyzed data from the National Violence Against Women Survey (NVAWS) of women and men aged 18 to 65. This random-digit-dial telephone survey included questions about violent victimization and health status indicators., Results: A total of 28.9% of 6790 women and 22.9% of 7122 men had experienced physical, sexual, or psychological IPV during their lifetime. Women were significantly more likely than men to experience physical or sexual IPV (relative risk [RR]=2.2, 95% confidence interval [CI]=2.1, 2.4) and abuse of power and control (RR=1.1, 95% CI=1.0, 1.2), but less likely than men to report verbal abuse alone (RR=0.8, 95% CI=0.7, 0.9). For both men and women, physical IPV victimization was associated with increased risk of current poor health; depressive symptoms; substance use; and developing a chronic disease, chronic mental illness, and injury. In general, abuse of power and control was more strongly associated with these health outcomes than was verbal abuse. When physical and psychological IPV scores were both included in logistic regression models, higher psychological IPV scores were more strongly associated with these health outcomes than were physical IPV scores., Conclusions: Both physical and psychological IPV are associated with significant physical and mental health consequences for both male and female victims., (Copyright © 2021 American Journal of Preventive Medicine. All rights reserved.)
- Published
- 2021
- Full Text
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