45 results on '"Olsen LK"'
Search Results
2. Adolescents' smoking behaviors, beliefs on the risks of smoking, and exposure to ETS in Juárez, Mexico.
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Bird Y, Moraros J, Olsen LK, Coronado GD, and Thompson B
- Abstract
Objective: To assess the smoking behaviors, beliefs about the risks of smoking, and exposure to ETS among adolescents in Juárez, Mexico. Methods: A cross-sectional study was conducted with sixth-grade students (N=506), aged 11-13 years old, attending 6 randomly selected schools. Schools were classified by school setting and SES. Results: Students attending a low SES school setting were more likely to have smoked (P < 0.01), be current smokers (P < 0.01), be exposed to ETS at home and in public (P < 0.01) than were students attending a middle or high SES school. Conclusion: Smoking interventions should target students attending school in low SES settings. [ABSTRACT FROM AUTHOR]
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- 2006
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3. Overview of the National Health Educator Competencies Update Project, 1998-2004 [corrected] [published erratum appears in HEALTH EDUC BEHAV 2007 Apr;34(2):409].
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Gilmore GD, Olsen LK, Taub A, and Connell D
- Abstract
The National Health Educator Competencies Update Project (CUP), conducted during 1998-2004, addressed what health educators currently do in practice, the degree to which the role definition of the entry-level health educator is still up-to-date, and the validation of advanced-level competencies. A 19-page questionnaire was sent to a representative sample of health educators in recognized practice settings in all states and the District of Columbia. A total of 4,030 health educators participated in the research (70.6% adjusted response rate) resulting in the largest national data set of its kind, with 1.6 million data points. The model derived from the research was hierarchical (7 areas of responsibility, 35 competencies, and 163 subcompetencies), with three levels of practice (Entry, Advanced 1, and Advanced 2) differentiated by degrees earned and years of experience. The findings affect professional preparation, credentialing, and professional development. [ABSTRACT FROM AUTHOR]
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- 2005
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4. Breast self-examination proficiency: attitudinal, demographic, and behavioral characteristics.
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Stratton BF, Nicholson ME, Olsen LK, Mahoney BS, and Warland RH
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- 1994
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5. Selected beverage consumption patterns among Mormon and non-Mormon populations from the same geographic location
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Weathersbee, PS, primary, Olsen, LK, additional, and Lodge, JR, additional
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- 1977
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6. SEPepQuant enhances the detection of possible isoform regulations in shotgun proteomics.
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Dou Y, Liu Y, Yi X, Olsen LK, Zhu H, Gao Q, Zhou H, and Zhang B
- Subjects
- Humans, Proteomics, Protein Isoforms genetics, Biomedical Research, Carcinoma, Hepatocellular, Liver Neoplasms
- Abstract
Shotgun proteomics is essential for protein identification and quantification in biomedical research, but protein isoform characterization is challenging due to the extensive number of peptides shared across proteins, hindering our understanding of protein isoform regulation and their roles in normal and disease biology. We systematically assess the challenge and opportunities of shotgun proteomics-based protein isoform characterization using in silico and experimental data, and then present SEPepQuant, a graph theory-based approach to maximize isoform characterization. Using published data from one induced pluripotent stem cell study and two human hepatocellular carcinoma studies, we demonstrate the ability of SEPepQuant in addressing the key limitations of existing methods, providing more comprehensive isoform-level characterization, identifying hundreds of isoform-level regulation events, and facilitating streamlined cross-study comparisons. Our analysis provides solid evidence to support a widespread role of protein isoform regulation in normal and disease processes, and SEPepQuant has broad applications to biological and translational research., (© 2023. Springer Nature Limited.)
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- 2023
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7. Vagus nerve stimulation: mechanisms and factors involved in memory enhancement.
- Author
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Olsen LK, Solis E Jr, McIntire LK, and Hatcher-Solis CN
- Abstract
Vagus nerve stimulation (VNS) has been recognized as a useful neuromodulation tool to target the central nervous system by electrical stimulation of peripheral nerves. Activation of the nucleus of the solitary tract (NTS) in the brainstem by vagal afferent nerve fibers allows for modulation of various higher order brain regions, including limbic and cerebral cortex structures. Along with neurological and psychiatric indications, clinical and preclinical studies suggest that VNS can improve memory. While the underlying mechanisms to improve memory with VNS involve brain areas, such as the prefrontal cortex and processes including alertness and arousal, here we focus on VNS-induced memory improvements related to the hippocampus, the main area implicated in memory acquisition. In addition, we detail research demonstrating that a targeted approach to VNS can modify memory outcomes and delve into the molecular mechanisms associated with these changes. These findings indicate that a greater understanding of VNS mechanisms while also considering stimulation parameters, administration site, timing in relation to training, and sex-specific factors, may allow for optimal VNS application to enhance memory., Competing Interests: LM was employed by Infoscitex Corporation. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Olsen, Solis, McIntire and Hatcher-Solis.)
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- 2023
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8. Vagus nerve stimulation-induced cognitive enhancement: Hippocampal neuroplasticity in healthy male rats.
- Author
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Olsen LK, Moore RJ, Bechmann NA, Ethridge VT, Gargas NM, Cunningham SD, Kuang Z, Whicker JK, Rohan JG, and Hatcher-Solis CN
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- Animals, Brain-Derived Neurotrophic Factor metabolism, Cognition, Electrodes, Implanted, Hippocampus physiology, Iridium metabolism, Male, Platinum metabolism, Rats, Rats, Sprague-Dawley, Vagus Nerve physiology, Neuronal Plasticity physiology, Vagus Nerve Stimulation
- Abstract
Background: Vagus nerve stimulation (VNS) improves cognition in humans and rodents, but the effects of a single session of VNS on performance and plasticity are not well understood., Objective: Behavioral performance and hippocampal (HC) electrophysiology/neurotrophin expression were measured in healthy adult rats after VNS paired training to investigate changes in cognition and synaptic plasticity., Methods: Platinum/iridium electrodes were surgically implanted around the left cervical branch of the VN of anesthetized male Sprague-Dawley rats (N = 47). VNS (100 μs biphasic pulses, 30 Hz, 0.8 mA) paired Novel Object Recognition (NOR)/Passive Avoidance Task (PAT) were assessed 24 h after training and post-mortem tissue was collected 48 h after VNS (N = 28). Electrophysiology recordings were collected using a microelectrode array system to assess functional effects on HC slices 90 min after VNS (N = 19). Sham received the same treatment without VNS and experimenters were blinded., Results: Stimulated rats exhibited improved performance in NOR (p < 0.05, n = 12) and PAT (p < 0.05, n = 14). VNS enhanced long-term potentiation (p < 0.05, n = 7-12), and spontaneous spike amplitude (p < 0.05, n = 7-12) and frequency (p < 0.05, n = 7-12) in the CA1. Immunohistochemical analysis found increased brain-derived neurotrophic factor expression in the CA1 (p < 0.05, n = 8-9) and CA2 (p < 0.01, n = 7-8)., Conclusion: These findings suggest that our VNS parameters promote synaptic plasticity and target the CA1, which may mediate the positive cognitive effects of VNS. This study significantly contributes to a better understanding of VNS mediated HC synaptic plasticity, which may improve clinical utilization of VNS for cognitive enhancement., Competing Interests: Declaration of competing interest We confirm that there are no known conflicts of interest related to this manuscript., (Published by Elsevier Inc.)
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- 2022
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9. Proteogenomic and metabolomic characterization of human glioblastoma.
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Wang LB, Karpova A, Gritsenko MA, Kyle JE, Cao S, Li Y, Rykunov D, Colaprico A, Rothstein JH, Hong R, Stathias V, Cornwell M, Petralia F, Wu Y, Reva B, Krug K, Pugliese P, Kawaler E, Olsen LK, Liang WW, Song X, Dou Y, Wendl MC, Caravan W, Liu W, Cui Zhou D, Ji J, Tsai CF, Petyuk VA, Moon J, Ma W, Chu RK, Weitz KK, Moore RJ, Monroe ME, Zhao R, Yang X, Yoo S, Krek A, Demopoulos A, Zhu H, Wyczalkowski MA, McMichael JF, Henderson BL, Lindgren CM, Boekweg H, Lu S, Baral J, Yao L, Stratton KG, Bramer LM, Zink E, Couvillion SP, Bloodsworth KJ, Satpathy S, Sieh W, Boca SM, Schürer S, Chen F, Wiznerowicz M, Ketchum KA, Boja ES, Kinsinger CR, Robles AI, Hiltke T, Thiagarajan M, Nesvizhskii AI, Zhang B, Mani DR, Ceccarelli M, Chen XS, Cottingham SL, Li QK, Kim AH, Fenyö D, Ruggles KV, Rodriguez H, Mesri M, Payne SH, Resnick AC, Wang P, Smith RD, Iavarone A, Chheda MG, Barnholtz-Sloan JS, Rodland KD, Liu T, and Ding L
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- Brain Neoplasms pathology, Computational Biology methods, Glioblastoma pathology, Humans, Metabolomics methods, Mutation genetics, Phospholipase C gamma genetics, Phospholipase C gamma metabolism, Phosphorylation physiology, Protein Tyrosine Phosphatase, Non-Receptor Type 11 genetics, Proteomics methods, Brain Neoplasms metabolism, Glioblastoma genetics, Glioblastoma metabolism, Protein Tyrosine Phosphatase, Non-Receptor Type 11 metabolism, Proteogenomics methods
- Abstract
Glioblastoma (GBM) is the most aggressive nervous system cancer. Understanding its molecular pathogenesis is crucial to improving diagnosis and treatment. Integrated analysis of genomic, proteomic, post-translational modification and metabolomic data on 99 treatment-naive GBMs provides insights to GBM biology. We identify key phosphorylation events (e.g., phosphorylated PTPN11 and PLCG1) as potential switches mediating oncogenic pathway activation, as well as potential targets for EGFR-, TP53-, and RB1-altered tumors. Immune subtypes with distinct immune cell types are discovered using bulk omics methodologies, validated by snRNA-seq, and correlated with specific expression and histone acetylation patterns. Histone H2B acetylation in classical-like and immune-low GBM is driven largely by BRDs, CREBBP, and EP300. Integrated metabolomic and proteomic data identify specific lipid distributions across subtypes and distinct global metabolic changes in IDH-mutated tumors. This work highlights biological relationships that could contribute to stratification of GBM patients for more effective treatment., Competing Interests: Declaration of interests S.Y. is employed by Sema4. A.H.K. consults for Monteris Medical. P.W. is a statistical consultant for Sema4. M.G.C. receives research support from Orbus Therapeutics and NeoimmuneTech Inc, and royalties from UpToDate., (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2021
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10. Draft Genome Assemblies and Annotations of Agrypnia vestita Walker, and Hesperophylax magnus Banks Reveal Substantial Repetitive Element Expansion in Tube Case-Making Caddisflies (Insecta: Trichoptera).
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Olsen LK, Heckenhauer J, Sproul JS, Dikow RB, Gonzalez VL, Kweskin MP, Taylor AM, Wilson SB, Stewart RJ, Zhou X, Holzenthal R, Pauls SU, and Frandsen PB
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- Animals, Biodiversity, Fresh Water, Genome Size, Holometabola classification, Insecta classification, Larva, Molecular Sequence Annotation, Phylogeny, Genomics, Holometabola genetics, Insecta genetics, Repetitive Sequences, Nucleic Acid
- Abstract
Trichoptera (caddisflies) play an essential role in freshwater ecosystems; for instance, larvae process organic material from the water and are food for a variety of predators. Knowledge on the genomic diversity of caddisflies can facilitate comparative and phylogenetic studies thereby allowing scientists to better understand the evolutionary history of caddisflies. Although Trichoptera are the most diverse aquatic insect order, they remain poorly represented in terms of genomic resources. To date, all long-read based genomes have been sequenced from individuals in the retreat-making suborder, Annulipalpia, leaving ∼275 Ma of evolution without high-quality genomic resources. Here, we report the first long-read based de novo genome assemblies of two tube case-making Trichoptera from the suborder Integripalpia, Agrypnia vestita Walker and Hesperophylax magnus Banks. We find that these tube case-making caddisflies have genome sizes that are at least 3-fold larger than those of currently sequenced annulipalpian genomes and that this pattern is at least partly driven by major expansion of repetitive elements. In H. magnus, long interspersed nuclear elements alone exceed the entire genome size of some annulipalpian counterparts suggesting that caddisflies have high potential as a model for understanding genome size evolution in diverse insect lineages., (© The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.)
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- 2021
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11. Viral mimetic priming enhances α-synuclein-induced degeneration: Implications for Parkinson's disease.
- Author
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Olsen LK, Cairns AG, Ådén J, Moriarty N, Cabre S, Alamilla VR, Almqvist F, Dowd E, and McKernan DP
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- Animals, Biomimetic Materials, Corpus Striatum metabolism, Dependovirus genetics, Disease Models, Animal, Genetic Vectors, Gliosis metabolism, Male, Motor Activity drug effects, Neurodegenerative Diseases etiology, Neurodegenerative Diseases physiopathology, Neuroimmunomodulation physiology, Neurons metabolism, Parkinson Disease metabolism, Parkinson Disease physiopathology, Poly I-C administration & dosage, Protein Aggregation, Pathological metabolism, Protein Aggregation, Pathological virology, Rats, Rats, Sprague-Dawley, Substantia Nigra metabolism, Tyrosine 3-Monooxygenase metabolism, alpha-Synuclein physiology, Parkinson Disease etiology, Poly I-C adverse effects, alpha-Synuclein metabolism
- Abstract
Evidence is accumulating to suggest that viral infections and consequent viral-mediated neuroinflammation may contribute to the etiology of idiopathic Parkinson's disease. Moreover, viruses have been shown to influence α-synuclein oligomerization as well as the autophagic clearance of abnormal intra-cellular proteins aggregations, both of which are key neuropathological events in Parkinson's disease pathogenesis. To further investigate the interaction between viral-mediated neuroinflammation and α-synuclein aggregation in the context of Parkinson's disease, this study sought to determine the impact of viral neuroinflammatory priming on α-synuclein aggregate-induced neuroinflammation and neurotoxicity in the rat nigrostriatal pathway. To do so, male Sprague-Dawley rats were intra-nigrally injected with a synthetic mimetic of viral dsRNA (poly I:C) followed two weeks later by a peptidomimetic small molecule which accelerates α-synuclein fibril formation (FN075). The impact of the viral priming on α-synuclein aggregation-induced neuroinflammation, neurodegeneration and motor dysfunction was assessed. We found that prior administration of the viral mimetic poly I:C significantly exacerbated or precipitated the α-synuclein aggregate induced neuropathological and behavioral effects. Specifically, sequential exposure to the two challenges caused a significant increase in nigral microgliosis (p < 0.001) and astrocytosis (p < 0.01); precipitated a significant degeneration of the nigrostriatal cell bodies (p < 0.05); and precipitated a significant impairment in forelimb kinesis (p < 0.01) and sensorimotor integration (p < 0.01). The enhanced sensitivity of the nigrostriatal neurons to pathological α-synuclein aggregation after viral neuroinflammatory priming further suggests that viral infections may contribute to the etiology and pathogenesis of Parkinson's disease., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2019
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12. Barriers to Human Sexuality Education Survey Research Among Vermont Public School Administrators.
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Blaisdell AJ and Olsen LK
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- Adolescent, Adolescent Behavior, Curriculum, Female, Humans, Male, Pregnancy, Pregnancy, Unplanned, Sexually Transmitted Diseases prevention & control, Vermont, Condoms statistics & numerical data, School Health Services organization & administration, Sex Education organization & administration
- Abstract
Background: Health educators in public high schools can provide educational interventions to reduce teen unintended pregnancy and sexually transmitted infections (STIs). Characteristics of teachers and schools influence their decision to provide condom education. Studies to determine characteristics must be conducted so HIV/sex education can be improved. If schools do not participate in these studies, barriers must be identified so researchers can collect sufficient data to produce information for curriculum reform., Methods: A study was conducted to identify teacher characteristics that influence their decision and intention to provide appropriate condom education. Follow-up e-mails were sent to administrators who opted out of the study to request more information about their decision to not participate. All responses were submitted via e-mail correspondence., Results: Six superintendents and 6 principals provided a reason for their decision to opt out. Superintendents cited being busy with district initiatives, time constraints, and lack of interest in participating in the study as reasons they did not wish to participate. Principals cited competing requests for participation in research, participation in other surveys, and time constraints., Conclusions: Securing administrative approval for human sexuality research is challenging. Administrators contend with many priorities, do not wish to overburden teachers, consider participation in voluntary research as a low priority, and may be more likely to respond to telephone requests. Administrators may not want to disclose that human sexuality or HIV education courses may not be taught by certified or qualified health educators., (© 2019, American School Health Association.)
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- 2019
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13. A role for viral infections in Parkinson's etiology?
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Olsen LK, Dowd E, and McKernan DP
- Abstract
Despite over 200 years since its first description by James Parkinson, the cause(s) of most cases of Parkinson's disease (PD) are yet to be elucidated. The disparity between the current understanding of PD symptomology and pathology has led to numerous symptomatic therapies, but no strategy for prevention or disease cure. An association between certain viral infections and neurodegenerative diseases has been recognized, but largely ignored or dismissed as controversial, for decades. Recent epidemiological studies have renewed scientific interest in investigating microbial interactions with the central nervous system (CNS). This review examines past and current clinical findings and overviews the potential molecular implications of viruses in PD pathology., Competing Interests: The authors declare that there are no competing interests associated with the manuscript., (© 2018 The Author(s).)
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- 2018
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14. The combined impact of adherence to five lifestyle factors on all-cause, cancer and cardiovascular mortality: a prospective cohort study among Danish men and women.
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Petersen KE, Johnsen NF, Olsen A, Albieri V, Olsen LK, Dragsted LO, Overvad K, Tjønneland A, and Egeberg R
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- Alcohol Abstinence, Alcohol Drinking adverse effects, Cardiovascular Diseases etiology, Cardiovascular Diseases mortality, Cardiovascular Diseases therapy, Cohort Studies, Combined Modality Therapy, Denmark epidemiology, Female, Follow-Up Studies, Humans, Male, Middle Aged, Mortality, Motor Activity, Neoplasms etiology, Neoplasms mortality, Neoplasms therapy, Overweight physiopathology, Overweight prevention & control, Overweight therapy, Prospective Studies, Smoking Cessation, Waist Circumference, Weight Loss, Cardiovascular Diseases prevention & control, Health Promotion, Life Style, Neoplasms prevention & control, Nutrition Policy, Patient Compliance
- Abstract
Individual lifestyle factors have been associated with lifestyle diseases and premature mortality by an accumulating body of evidence. The impact of a combination of lifestyle factors on mortality has been investigated in several studies, but few have applied a simple index taking national guidelines into account. The objective of the present prospective cohort study was to investigate the combined impact of adherence to five lifestyle factors (smoking, alcohol intake, physical activity, waist circumference and diet) on all-cause, cancer and cardiovascular mortality based on international and national health recommendations. A Cox proportional hazards model was used to estimate hazard ratios (HR) with 95 % CI. During a median follow-up of 14 years, 3941 men and 2827 women died. Among men, adherence to one additional health recommendation was associated with an adjusted HR of 0·73 (95 % CI 0·71, 0·75) for all-cause mortality, 0·74 (95 % CI 0·71, 0·78) for cancer mortality and 0·70 (95 % CI 0·65, 0·75) for cardiovascular mortality. Among women, the corresponding HR was 0·72 (95 % CI 0·70, 0·75) for all-cause mortality, 0·76 (95 % CI 0·73, 0·80) for cancer mortality and 0·63 (95 % CI 0·57, 0·70) for cardiovascular mortality. In the present study, adherence to merely one additional health recommendation had a protective effect on mortality risk, indicating a huge potential in enhancing healthy lifestyle behaviours of the population.
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- 2015
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15. Renal denervation.
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Olsen LK, Kamper AL, Svendsen JH, and Feldt-Rasmussen B
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- Antihypertensive Agents therapeutic use, Catheter Ablation, Humans, Hypertension drug therapy, Treatment Outcome, Hypertension surgery, Kidney innervation, Renal Artery innervation, Sympathectomy methods
- Abstract
Purpose of Review: Renal denervation (RDN) has, within recent years, been suggested as a novel treatment option for patients with resistant hypertension. This review summarizes the current knowledge on this procedure as well as limitations and questions that remain to be answered., Recent Findings: The Symplicity HTN-1 (2009) and HTN-2 (2010) studies re-introduced an old treatment approach for resistant hypertension and showed that catheter-based RDN was feasible and resulted in substantial blood pressure (BP) reductions. However, they also raised questions of durability of BP reduction, correct patient selection, anatomical and physiological effects of RDN as well as possible beneficial effects on other diseases with increased sympathetic activity. The long awaited Symplicity HTN-3 (2014) results illustrated that the RDN group and the sham-group had similar reductions in BP., Summary: Initial studies demonstrated that RDN in patients with resistant hypertension was both feasible and safe and indicated that RDN may lead to impressive reductions in BP. However, recent controlled studies question the BP lowering effect of RDN treatment. Large-scale registry data still supports the favorable BP reducing effect of RDN. We suggest that, in the near future, RDN should not be performed outside clinical studies. The degree of denervation between individual operators and between different catheters and techniques used should be clarified. The major challenge ahead is to identify which patients could benefit from RDN, to clarify the lack of an immediate procedural success parameter, and to establish further documentation of overall effect of treatment such as long-term cardiovascular morbidity and mortality., (Copyright © 2015 European Federation of Internal Medicine. Published by Elsevier B.V. All rights reserved.)
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- 2015
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16. High incidence of secondary hypertension in patients referred for renal denervation--the Copenhagen experience.
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Olsen LK, Kamper AL, Svendsen JH, Bang LE, Frimodt-Møller M, Kelbæk H, Sander M, and Feldt-Rasmussen B
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- Blood Pressure Monitoring, Ambulatory methods, Denmark epidemiology, Female, Humans, Hypertension drug therapy, Hypertension etiology, Kidney physiopathology, Male, Middle Aged, Prospective Studies, Blood Pressure Monitoring, Ambulatory statistics & numerical data, Hypertension epidemiology, Kidney innervation, Sympathectomy methods
- Abstract
Percutaneous renal denervation is a new treatment option for patients with resistant hypertension and little is known about the eligibility of patients referred. 100 consecutive patients were referred for renal denervation from March 2011 through September 2012. Clinical data were prospectively extracted from letters and documents from referring clinics and from our physical examination. Of the 100 patients included, 68 were men and the mean age was 60 (± 12) years. Office blood pressure was 176 (± 28)/99 (± 19) mmHg and 24-h ambulatory blood pressure 156 (± 20)/88 (± 13) mmHg. The mean number of antihypertensive agents was 4.0 (± 1.6). Nearly four-fifths (82%) of the patients were categorized as having resistant hypertension based on the criteria stated by The American Heart Association's stated criteria. Nine patients declined interest in renal denervation before completing the clinical workup program. Thus, 91 patients were screened, and of those 51 were found to be candidates for renal denervation. Forty patients were not candidates, of which secondary hypertension was the most common cause (n = 10). Only 51% of patients referred for renal denervation were eligible for treatment. The prevalence of secondary hypertension was 10% of the referred population. Secondary hypertension should therefore be considered in the evaluation of candidates for renal denervation.
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- 2014
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17. Key questions for conducting role delineation research.
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Taub A, Gilmore GD, Olsen LK, and Connell D
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- Data Collection, Health Promotion, Professional Competence standards, Professional Role, Research
- Abstract
Role delineation research for the verification of professional competencies is essential in many professions to promote quality assurance and support capacity building and workforce development. In this article, guidance is provided about key aspects of role delineation research. The information contained in this article focuses on 13 key questions within three selected research phases when attempting to identify and verify the roles that are inherent within any given profession. The major sections in the paper include planning the research, collecting and analyzing the data, interpreting findings, and considering the future. Recommendations and examples related to each of the important questions are provided to assist others undertaking role delineation research.
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- 2011
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18. Workforce development: using role delineation research findings for policy-making and professional practice.
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Taub A, Gilmore GD, and Olsen LK
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- Evidence-Based Practice, Humans, Organizational Case Studies, Research, Role, United States, Workforce, Health Education, Health Promotion methods, Policy Making, Professional Competence
- Abstract
For the health education profession in the United States, role delineation research has been ongoing to identify valid professional competencies as the basis for workforce development. During 1998-2004, a multi-phase national research study, the National Health Educator Competencies Update Project (CUP), was designed to re-verify the role of the entry-level health educator, and further define and verify the role of advanced level health educators. The CUP findings are the evidence that has influenced the professional preparation, credentialing, and professional development of health educators. The lessons learned include the importance of employing role delineation research with a discipline-specific representative sample to appropriately affect workforce development and sustainability through an empirically-based model.
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- 2011
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19. When operable patients become inoperable: conversion of a surgical aortic valve replacement into transcatheter aortic valve implantation.
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Olsen LK, Arendrup H, Engstrøm T, and Søndergaard L
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- Aged, Aortic Valve diagnostic imaging, Aortic Valve Stenosis diagnostic imaging, Aortic Valve Stenosis surgery, Calcinosis diagnostic imaging, Calcinosis surgery, Extracorporeal Circulation, Female, Heart Arrest, Induced, Heart Valve Prosthesis, Heart Valve Prosthesis Implantation instrumentation, Humans, Prosthesis Design, Severity of Illness Index, Suture Techniques, Tomography, X-Ray Computed, Treatment Outcome, Aortic Valve surgery, Aortic Valve Stenosis therapy, Calcinosis therapy, Cardiac Catheterization instrumentation, Heart Valve Prosthesis Implantation methods
- Abstract
Transcatheter aortic valve implantation (TAVI) is a relatively new treatment option for inoperable patients with severe aortic stenosis (AS). This case describes how a planned conventional surgical aortic valve replacement (AVR) on a 73-year-old woman was successfully converted to a TAVI procedure. On extracorporal circulation it was reconized that the aortic annulus, the coronary ostiae and the proximal part of the ascending aorta were severely calcified making valve implantation impossible. Surgical closure without valve substitution was estimated to be associated with a high risk of mortality due to the imparied left ventricular function. Consequently, TAVI was performed with a CoreValve ReValving System prosthesis. The delivery of the valve prosthesis was made through the ascending part of aorta, proximal of the cannulation of aorta. Positioning of the valve prosthesis was made under visual guidance, and the prosthesis was sutured to the ascending aorta. With some manipulation of the prosthesis it was possible to suture the aorta circumferentially around the fully expanded upper part of the prosthesis. Post-procedurally the patient recovered successfully, with improved function capacity, aortic valve area and left ventricle function.
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- 2009
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20. Transcatheter valve-in-valve implantation due to severe aortic regurgitation in a degenerated aortic homograft.
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Olsen LK, Engstrøm T, and Søndergaard L
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- Aged, 80 and over, Aortic Valve Insufficiency etiology, Calcinosis complications, Humans, Male, Treatment Outcome, Aortic Valve, Aortic Valve Insufficiency therapy, Cardiac Catheterization instrumentation, Cardiac Catheterization methods, Heart Valve Prosthesis, Transplants adverse effects
- Abstract
Transcatheter aortic valve implantation (TAVI) in severe aortic stenosis has proven to be a feasible and effective treatment modality for inoperable patients. Until now, neither aortic regurgitation nor degenerated bioprostheses has been an indication for TAVI. However, this article reports a successful valve-in-valve implantation of a CoreValve aortic valve prosthesis through the right subclavian artery in a case of severe aortic regurgitation within a degenerated aortic homograft. The case exemplifies the possibilities of expanding the indications for TAVI, as well as other vascular access options than the femoral arteries.
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- 2009
21. [Percutaneous aortic valve replacement - initial experience and results].
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Olsen LK, Engstrøm T, Wachtell K, Kristensen T, Hassager C, Ihlemann N, Møller JE, Andersen LW, Olsen PS, and Søndergaard L
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- Aged, Aged, 80 and over, Aortic Valve Stenosis surgery, Female, Heart Valve Prosthesis, Humans, Male, Minimally Invasive Surgical Procedures methods, Prosthesis Design, Treatment Outcome, Aortic Valve surgery, Heart Valve Prosthesis Implantation methods
- Abstract
Introduction: Aortic stenosis (AS) is the most common heart valvular disease and with progressive disease morbidity and mortality are substantial. The standard treatment in symptomatic patients is surgical valve replacement. However, one third of the patients with severe AS are inoperable due to advanced age and comorbidity. The aim of this study was to evaluate the results of percutaneous aortic valve replacement - a new treatment modality for patients with inoperable AS., Material and Methods: A total of 20 patients were treated with CoreValve ReValving System valve prosthesis at the Copenhagen University Hospital in the period November 2007 to September 2008., Results: The procedural success was 100% and 30-day mortality was 5%, none of which was due to cardiac death. The treatment resulted in a considerable relief of symptoms. The aortic valve area showed a significant increase from 0.8 +/- 0.2 cm(2) to 1.9 +/- 0.6 cm(2) (p < 0.01). There was a significant decrease in the peak pressure gradient across the aortic valve from 75 +/- 38 mm Hg to 18 +/- 8 mm Hg (p < 0.01). Permanent pacemaker due to AV block was the most common complication with an incidence of 25% during the 30-day follow-up., Conclusion: Implantation of a percutaneous aortic valve can be achieved in patients with inoperable AS and may become a very important therapeutic modality for this group of patients. These first results from Copenhagen University Hospital are promising and in concordance with international experience.
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- 2009
22. [Transcatheter replacement of the aortic valve--a novel treatment modality for high-risk patients].
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Olsen LK, Engstrøm T, Wachtell K, Kristensen T, Hassager C, Ihlemann N, Møller JE, Andersen LW, Olsen PS, and Søndergaard L
- Subjects
- Aortic Valve Stenosis complications, Aortic Valve Stenosis surgery, Cardiac Catheterization, Heart Valve Prosthesis, Humans, Minimally Invasive Surgical Procedures methods, Patient Selection, Postoperative Complications diagnosis, Prosthesis Design, Risk Factors, Treatment Outcome, Aortic Valve surgery, Heart Valve Prosthesis Implantation methods
- Abstract
Aortic stenosis is the most common valve disease and in line with the rising life expectancy, the population of patients with this disease is expected to rise in years to come. About one third of the patients evaluated for conventional surgical replacement of the aortic valve are dismissed due to high risk of complication as a result of age and occurrence of comorbidity. For this group of inoperable patients, a new treatment can be offered in the form of transcatheter replacement of the aortic valve. This article describes the method and the current experiences.
- Published
- 2009
23. A role delineation study of health educators in the United States: methodological innovations.
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Taub A, Olsen LK, Gilmore GD, and Connell D
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- Data Interpretation, Statistical, Humans, United States, Workforce, Health Education, Professional Competence, Professional Role
- Abstract
This paper focuses on methodological innovations used in the National Health Educator Competencies Update Project (CUP) in the United States. The CUP was a six-year research study designed to delineate the role of the health educator in the USA. Individuals who self-identified as health educators were included in the study. To provide context, the background for the research is presented, followed by a brief overview of the research process. Some of the key methodological innovations discussed are: selecting a representative sample when the total population of those working as health educators was not easily identified or readily accessible; assessing response methodology preferences through pilot studies; enhancing the response rate through accurate, up-to-date mailing lists and incentives; and exploring new approaches to large-scale data analyses. Insights gained are included for other researchers who may wish to undertake similar studies or draw from the CUP dataset for secondary analyses.
- Published
- 2008
- Full Text
- View/download PDF
24. Smoking practices, risk perception of smoking, and environmental tobacco smoke exposure among 6th-grade students in Ciudad Juárez, Mexico.
- Author
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Bird Y, Moraros J, Olsen LK, Forster-Cox S, Staines-Orozco H, and Buckingham RW
- Subjects
- Adolescent, Child, Female, Health Knowledge, Attitudes, Practice, Humans, Male, Mexico, Schools, Smoking adverse effects, Students, Tobacco Smoke Pollution, Adolescent Behavior psychology, Environmental Exposure, Risk-Taking, Smoking psychology
- Abstract
This study assessed the smoking practices, risk perception of smoking, and environmental tobacco smoke (ETS) exposure among adolescents in Ciudad Juárez, Mexico. We used a cross-sectional method to examine the smoking practices, risk perception of smoking, and ETS exposure of 6th-grade students (N=506), aged 11-13 years, attending six randomly selected middle schools. Schools were classified by school setting (i.e., public vs. private) and socioeconomic status (SES; i.e., low, middle, or high). The results indicated that 6th-grade students attending a public, low-SES school setting in Ciudad Juárez not only exhibited significantly higher rates of ETS exposure at home and in public places (p<.01) but also were more likely to have tried smoking (p<.01) and to be current smokers (p<.01), and were less likely to support a ban on smoking in public places (p<.01), compared with students who attended a private school or a public, middle- or high-SES school setting. These results provide further evidence that public health interventions to prevent initiation of smoking and to assist in smoking cessation among adolescents and to reduce their ETS exposure at home and in public need to target all school-aged students, especially those attending school in a low-SES settings.
- Published
- 2007
- Full Text
- View/download PDF
25. Development of a Unified Code of Ethics for the Health Education Profession: a report of the National Task Force on Ethics in Health Education.
- Author
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Capwell EM, Smith BJ, Shirreffs J, and Olsen LK
- Subjects
- United States, Ethics, Professional, Health Education standards
- Published
- 2000
- Full Text
- View/download PDF
26. The longevity of Growing Healthy: an analysis of the eight original sites implementing the School Health Curriculum Project.
- Author
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Smith DW, Redican KJ, and Olsen LK
- Subjects
- Health Plan Implementation, Health Promotion, Humans, Leadership, Surveys and Questionnaires, United States, Curriculum, Health Education, Schools
- Abstract
The status of the Growing Healthy curriculum (School Health Curriculum Project [SHCP]) was examined in the eight sites selected in 1969 by the National Clearinghouse on Smoking and Health to receive funded training and implementation support. A contact person from each site completed and returned a questionnaire pertaining to the district's continued implementation (institutionalization) of the SHCP. Most districts had not continued to implement the program. Reasons for discontinuation included loss of the "program champion" and insufficient administrative leadership. Districts continuing to implement the program generally were smaller in size, and employed a part-time coordinator for the SHCP. Recommendations for institutionalizing future instruction programs include identifying replacement program coordinators and other administrators to ensure continuity and support for the program over time, and conducting process and impact evaluations on program effects.
- Published
- 1992
- Full Text
- View/download PDF
27. Where should Health Science/Education be located administratively?
- Author
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Olsen LK
- Subjects
- Health Education trends, Physical Education and Training, Recreation, Schools, Public Health organization & administration, Science, United States, Universities organization & administration, Health Education organization & administration
- Published
- 1982
- Full Text
- View/download PDF
28. Are baccalaureate level community HE specialists an answer to the labor shortage?
- Author
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Olsen LK and Redican KJ
- Subjects
- Employment, United States, Allied Health Personnel education, Health Education, Health Workforce supply & distribution
- Published
- 1978
29. Report of the 1984 ASHA membership survey.
- Author
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Olsen LK, Tucker AW, Allensworth DD, and St Pierre R
- Subjects
- Data Collection, Health Education, Humans, United States, Education, Continuing, School Health Services, Societies
- Abstract
The results of the most recent American School Health Association (ASHA) membership survey, conducted by ASHA to retain its continuing education units provider status granted in 1981 by the American Nurses' Association are reported. Results of the 1984 survey are compared to two previous surveys, conducted in 1980 and 1982. Topics examined include membership demographics, attendance at national meetings, continuing education needs and preferences, maintaining professional competence, professional issues of importance to readers, and options for improving the usefulness of the Journal of School Health. Several membership trends are discussed and implications for future planning are noted.
- Published
- 1986
- Full Text
- View/download PDF
30. Development and application of the student test used in the School Health Education Evaluation.
- Author
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Olsen LK, Hambleton R, Simon R, Connell DB, Turner RR, and Orenstein D
- Subjects
- Attitude to Health, Child, Curriculum, Evaluation Studies as Topic, Health Promotion, Humans, Pilot Projects, United States, Educational Measurement, Health Education standards, Schools
- Abstract
To accurately assess the health knowledge, attitudes, and practices of students in grades four-seven, the staff of the School Health Education Evaluation (SHEE) project devoted extensive effort to identify a test appropriate for such assessment. An extensive literature review failed to produce an instrument sufficiently comprehensive or psychometrically sound that could be employed. In this paper, the philosophic orientation and the detailed processes followed in developing a noncurriculum specific, psychometrically sound evaluation instrument for use in the study is described. Included are the bases for the test framework, test objective development, test item review, the various measures constructed using the test blueprint, student performance on the test battery, the psychometric qualities of the test, and suggestions for appropriate use of the final test in other school health education settings.
- Published
- 1985
- Full Text
- View/download PDF
31. Race and gender: analysis of granting of doctoral degrees.
- Author
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Airhihenbuwa CO, Olsen LK, St Pierre RW, and Wang MQ
- Subjects
- Career Choice, Female, Humans, Job Description, Male, United States, Education, Graduate trends, Health Education, Racial Groups, Sex Factors
- Published
- 1989
32. Caffeine and pregnancy. A retrospective survey.
- Author
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Weathersbee PS, Olsen LK, and Lodge JR
- Subjects
- Adult, Coffee adverse effects, Female, Fetal Death chemically induced, Humans, Male, Pregnancy Trimester, First, Retrospective Studies, Abortion, Spontaneous chemically induced, Caffeine adverse effects, Pregnancy drug effects
- Abstract
A population group consisting of 800 households of women who recently had been pregnant was surveyed to determine the level of consumption of a variety of beverages. Three fourths of the subjects were Mormon. Of a subgroup of 16 women identified as having an estimated daily intake of caffeine of 600 mg or greater, 13 had experienced a reproductive loss in the form of spontaneous abortion (eight) or stillbirth (five), two had given birth to premature infants, and only one had had an uncomplicated delivery. An inordinately high rate or reproductive loss also was noted in 13 households where the man's estimated daily intake of caffeine was greater than 600 mg. A cause-and-effect relationship cannot be determined by this type of retrospective study, but physicians should keep in mind the possibility that an excessive intake of caffeine may be a factor in otherwise unexplainable spontaneous abortion or perinatal mortality.
- Published
- 1977
- Full Text
- View/download PDF
33. Inservice training for elementary school health education.
- Author
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Olsen LK, Stone DB, and Saunders JA
- Subjects
- Child, Curriculum, Humans, Models, Theoretical, Education, Continuing, Health Education, Inservice Training, Teaching
- Published
- 1976
34. Problems faced in developing a state constituent organization.
- Author
-
Olsen LK
- Subjects
- United States, School Health Services, Societies organization & administration
- Published
- 1981
- Full Text
- View/download PDF
35. Reye's syndrome: a review of research studies.
- Author
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Lopez TP, Redican KJ, and Olsen LK
- Subjects
- Adolescent, Adult, Child, Drug-Related Side Effects and Adverse Reactions, Female, Humans, Male, Reye Syndrome physiopathology, Reye Syndrome therapy, Toxins, Biological adverse effects, Virus Diseases complications, Reye Syndrome etiology
- Published
- 1982
- Full Text
- View/download PDF
36. Effects of a prototype health education curriculum on health knowledge of lower socioeconomic sixth grade students.
- Author
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Redican KJ, Olsen LK, and Stone DB
- Subjects
- Child, Educational Measurement, Evaluation Studies as Topic, Humans, Socioeconomic Factors, United States, Health Education, Teaching
- Published
- 1978
37. A comparison of the cognitive effects of two prototype health education curriculums on selected elementary school children.
- Author
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Redican KJ, Olsen LK, and Mathis RM
- Subjects
- Achievement, Child, Evaluation Studies as Topic, Humans, Schools, United States, Curriculum, Health Education
- Published
- 1979
- Full Text
- View/download PDF
38. Enhancing a university's health science curriculum with homestudy programs of the Center for Disease Control.
- Author
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Toohey JV and Olsen LK
- Subjects
- Arizona, Evaluation Studies as Topic, United States, Centers for Disease Control and Prevention, U.S., Curriculum, Health Occupations education, Programmed Instructions as Topic
- Published
- 1979
39. First aid and the mentally retarded.
- Author
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Hauser C, Cockson A, Redican KJ, and Olsen LK
- Subjects
- Adult, Female, Humans, Male, Nebraska, First Aid, Health Education, Intellectual Disability
- Published
- 1979
40. Assessment of the cognitive effect of a prototype health education unit on sixth grade students.
- Author
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Cook RJ and Olsen LK
- Subjects
- Cardiovascular System, Child, Curriculum, Educational Measurement, Evaluation Studies as Topic, Humans, Achievement, Health Education
- Abstract
The purpose of this study was to assess the cognitive effects of a prototype health education teaching model on the cardiovascular health knowledge of selected sixth grade students. The level of significance for the study was set at .05. No significant differences between pre-test mean scores, experimental to control group were found. Significant differences between post-test mean scores, experimental to control group were noted. No significant differences between control group pre-test to post-test mean scores were found. Although significant experimental group pre-test to post-test mean scores were found in all four locations, no significant differences were found between the experimental post-test mean scores by geographic location.
- Published
- 1975
- Full Text
- View/download PDF
41. Evaluation of the effects of performance based teacher education on the health knowledge and attitudes of fifth grade students.
- Author
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Caramanica VP, Feiler EG, and Olsen LK
- Subjects
- Achievement, Arkansas, Child, Educational Measurement, Evaluation Studies as Topic, Female, Humans, Male, Smoking, Attitude to Health, Curriculum, Health Education, Students, Teaching
- Published
- 1974
- Full Text
- View/download PDF
42. Demographic and practice characteristics of chiropractors.
- Author
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Baffi CR, Redican KJ, Morris L, Schroeder KK, and Olsen LK
- Subjects
- Education, Continuing, Fees and Charges, Female, Humans, Income, Licensure, Male, Private Practice economics, Professional Practice Location, Random Allocation, United States, Workforce, Chiropractic education
- Abstract
The purpose of this study was to determine the demographic and practice characteristics of chiropractors. A four-part survey questionnaire was developed and mailed to a national stratified (by state) random sample of chiropractors. The analysis of data revealed that most chiropractors hold an undergraduate degree, practice in an urban area, are licensed to practice in only one state, belong to their state's chiropractic association, and are active in continuing education. Other data analyzed related to income, sources of new patients and average fees charged.
- Published
- 1988
43. A suggested model for assessing teacher performance.
- Author
-
Olsen LK
- Subjects
- California, Curriculum, Evaluation Studies as Topic, Illinois, Health Education, Models, Theoretical, Teaching
- Published
- 1973
44. An evaluation instrument for appraising the health related attitudes of college students.
- Author
-
Olsen LK
- Subjects
- California, Students, Attitude to Health, Psychological Tests
- Published
- 1972
- Full Text
- View/download PDF
45. An evaluation of the long-range effects of drug education workshops.
- Author
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Kleinman SP and Olsen LK
- Subjects
- Attitude, Evaluation Studies as Topic, Humans, Illinois, Time Factors, Health Education, Substance-Related Disorders
- Published
- 1973
- Full Text
- View/download PDF
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