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Introduction: The management of benign bone lesions is controversial as it is dependent on a multitude of factors such as age, anatomic location, comorbidities, lesion metabolic activity, surgeon preferences, and goals of care, among others. Thus far, many studies have attempted to report on these lesions; however, most are heterogeneous compilations of benign and malignant lesions with nearly all failing to report patient treatment and none of which have originated from a suburban area of the United States. The goal of this study was to establish a modern database dedicated solely to benign bone tumors to reflect current diagnosis and treatment trends in suburban New York. Materials and Methods: This was a multicenter retrospective observational study with inclusion criteria limited to benign bone lesions of all ages. Malignant lesions were excluded. Patients were drawn from both primary care provider and surgeon records, with documentation of their associated management. Results: A total of 689 patients met inclusion criteria. The overall operative rate for this cohort was 71.6%. In agreement with current literature, aneurysmal bone cysts, giant cell tumors, and osteochondromas underwent surgery more frequently than enchondromas; older patients underwent surgery less frequently; benign bone lesions were more commonly found in younger males, and the distal femur and proximal tibia were the most common locations for lesions (P < .05 for all findings). Conclusion: This study demonstrates the management of a globally representative variety of benign bone lesions in a diverse suburban population of New York and should facilitate future research on how lesion type, location, management, and other factors relate to patient outcomes.

Abstract In public opinion, social and digital media provide means for influence as well as sorting according to pre-existing values. Here we consider types of media usage versus opinion using new polling results in the former Soviet republics (FSRs) of Belarus, Ukraine, and Georgia. Over 1000 individuals in each country were asked about a news event (the January 6 riot at the U.S. Capitol) and about the long-term future of their country. We find that year of birth and country of residence, rather than self-reported media reliance, consistently predicted the respondents’ views, particularly on the future of their country. The timing of these differences suggests a cultural difference between generations growing up in the Soviet Union (likely more pro-Russian) versus afterward, in an FSR (more pro-Western). Whereas digital media choice is somewhat correlated with perceptions of a recent, international news event, the more predictive factors are longer-term cultural values and age cohorts within each nation.

Background Surgical stabilization of rib fractures (SSRF) has been shown to improve outcomes, yet there is an absence of studies comparing SSRF techniques. An intrathoracic system that minimizes incision length has recently been developed and adopted by multiple institutions. We hypothesized that SSRF with an intrathoracic system plus intercostal nerve cryoneurolysis (IC) leads to improved pain control compared with an extrathoracic system plus IC.Methods A single-center, retrospective chart review was performed comparing intrathoracic SSRF versus extrathoracic SSRF, and included patients undergoing SSRF from 2015 to 2021 at a level 1 trauma center. Patients who did not undergo intercostal nerve cryoablation were excluded. The primary outcome was opioid consumption based on morphine milligram equivalent (MME) consumption. We collected Rib score, Blunt Pulmonary Contusion 18 Score, number of rib fractures, number of ribs plated, and Injury Severity Score (ISS) to compare baseline characteristics of each group.Results A total of 112 patients were evaluated for study inclusion. Thirty-one patients were excluded due to missing outcomes data and/or lack of cryoablation. There was no difference in ISS or Rib Score between the intrathoracic (n=33) and extrathoracic (n=48) groups. At 7-day follow-up, the median MME requirement was significantly lower in the intrathoracic group (21.25) versus the extrathoracic group (46.20) (p=0.02).Conclusion Intrathoracic SSRF was associated with a lower postoperative MME consumption compared with extrathoracic SSRF. These data support the use of intrathoracic SSRF to improve pain control compared to extrathoracic SSRF.Level of evidence III.

IntroductionNeural induction of human induced pluripotent stem cells represents a critical switch in cell state during which pluripotency is lost and commitment to a neural lineage is initiated. Although many of the key transcription factors involved in neural induction are known, we know little of the temporal and causal relationships that are required for this state transition.MethodsHere, we have carried out a longitudinal analysis of the transcriptome of human iPSCs undergoing neural induction. Using the temporal relationships between the changing profile of key transcription factors and subsequent changes in their target gene expression profiles, we have identified distinct functional modules operative throughout neural induction.ResultsIn addition to modules that govern loss of pluripotency and gain of neural ectoderm identity, we discover other modules governing cell cycle and metabolism. Strikingly, some of these functional modules are retained throughout neural induction, even though the gene membership of the module changes. Systems analysis identifies other modules associated with cell fate commitment, genome integrity, stress response and lineage specification. We then focussed on OTX2, one of the most precociously activated transcription factors during neural induction. Our temporal analysis of OTX2 target gene expression identified several OTX2 regulated gene modules representing protein remodelling, RNA splicing and RNA processing. Further CRISPRi inhibition of OTX2 prior to neural induction promotes an accelerated loss of pluripotency and a precocious and aberrant neural induction disrupting some of the previously identified modules.DiscussionWe infer that OTX2 has a diverse role during neural induction and regulates many of the biological processes that are required for loss of pluripotency and gain of neural identity. This dynamical analysis of transcriptional changes provides a unique perspective of the widespread remodelling of the cell machinery that occurs during neural induction of human iPSCs.

ABSTRACT The ability to measure neutralizing antibodies on large scale can be important for understanding features of the natural history and epidemiology of infection, as well as an aid in determining the efficacy of interventions, particularly in outbreaks such as the current severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. Because of the assay’s rapid scalability and high efficiency, serology measurements that quantify the presence rather than function of serum antibodies often serve as proxies of immune protection. Here, we report the development of a high-throughput, automated fluorescence-based neutralization assay using SARS-CoV-2 virus to quantify neutralizing antibody activity in patient specimens. We performed large-scale testing of over 19,000 COVID-19 convalescent plasma (CCP) samples from patients who had been infected with SARS-CoV-2 between March and August 2020 across the United States. The neutralization capacity of the samples was moderately correlated with serological measurements of anti-receptor-binding domain (RBD) IgG levels. The neutralizing antibody levels within these convalescent-phase serum samples were highly variable against the original USA-WA1/2020 strain with almost 10% of individuals who had had PCR-confirmed SARS-CoV-2 infection having no detectable antibodies either by serology or neutralization, and ~1/3 having no or low neutralizing activity. Discordance between neutralization and serology measurements was mainly due to the presence of non-IgG RBD isotypes. Meanwhile, natural infection with the earliest SARS-CoV-2 strain USA-WA1/2020 resulted in weaker neutralization of subsequent B.1.1.7 (alpha) and the B.1.351 (beta) variants, with 88% of samples having no activity against the BA.1 (omicron) variant. IMPORTANCE The ability to directly measure neutralizing antibodies on live SARS-CoV-2 virus in individuals can play an important role in understanding the efficacy of therapeutic interventions or vaccines. In contrast to functional neutralization assays, serological assays only quantify the presence of antibodies as a proxy of immune protection. Here, we have developed a high-throughput, automated neutralization assay for SARS-CoV-2 and measured the neutralizing activity of ~19,000 COVID-19 convalescent plasma (CCP) samples collected across the United States between March and August of 2020. These data were used to support the FDA’s interpretation of CCP efficacy in patients with SARS-CoV-2 infection and their issuance of emergency use authorization of CCP in 2020.

Background: Physician characteristics such as education and sociodemographic attributes are associated with particular practice patterns, such as practice in rural settings. Understanding the Canadian context of such associations can inform medical school recruitment and health workforce decision-making. Objective: The objective of this scoping review was to report the nature and extent of the literature on associations between characteristics of physicians in Canada and physicians’ practice patterns. Eligibility criteria: We included studies reporting associations between 1) the education or sociodemographic attributes of practicing physicians or residents in Canada and 2) practice patterns, including career choice, practice setting, and populations served. Methods: We searched five electronic databases (MEDLINE (R) ALL, Embase, ERIC, Education Source and Scopus) for quantitative primary studies and reviewed reference lists of included studies for additional studies. Data were extracted using a standardized data charting form. Results: Our search yielded 80 studies. Sixty-two examined education, evenly divided between undergraduate and postgraduate. Fifty-eight examined physicians’ attributes, most focusing on sex/gender. The majority of studies focused on the outcome of practice setting. We found no studies examining race/ethnicity or socioeconomic status. Conclusion: Many studies in our review found positive associations between (i) rural training or rural background and rural practice setting and (ii) location of training or physicians’ origin and practice in that location, consistent with previous literature. Associations for sex/gender were mixed, suggesting it may be a less useful target for workforce planning or recruitment aiming to address gaps in health care provision. More research is needed on the association of characteristics, particularly race/ethnicity and socioeconomic status, with career choice and populations served.

Purpose Self-management is recommended for addressing chronic conditions, and self-management programmes improve health behaviours and outcomes. However, social and economic factors have been neglected in self-management research, despite their relevance for marginalized groups. Thus, we aimed to explore barriers and facilitators that influence self-management among socioeconomically marginalized people who use drugs (PWUD). Methods Using community-based participatory methods, we developed a qualitative interview guide and conducted peer-led recruitment. Participants were admitted into the study after self-identifying as using non-prescribed drugs, having a chronic health issue, and experiencing socioeconomic marginalization. Data were analysed using reflexive thematic analysis, taking a relational autonomy lens. Results Participants highlighted substantial barriers to managing their health issues, mostly stemming from their social and economic environments, such as unstable housing, low income, lack of supportive social networks, and negative healthcare experiences. Participants also described how their ability to self-manage their chronic conditions benefited from specific aspects of social interactions, including close relationships, community connectedness, and engaging in peer support. Conclusions Our findings suggest that structural interventions are needed to support self-management among marginalized PWUD, especially stable housing. Self-management supports for PWUD would benefit from including a range of low-barrier community-based options, peer work opportunities, and advocacy for needs.

Plain English summary Patient engagement in primary care research is an increasingly common requirement, as it helps make research more relevant to patients and therefore more valuable. However, there is limited evidence about the outcomes on engagement and actually how it affects research. In Canada, the Canadian Institutes of Health Research has a Strategy for Patient-Oriented Research (SPOR), which in 2016 funded Ontario’s INSPIRE-PHC centre of excellence and its Patient Engagement Resource Centre (PERC). PERC conducted an online survey of the three INSPIRE-PHC studies that engaged patients to guide their research. We found that patient partners (PPs) were positive about their experience during research meetings, the value of collaboration, and the support that was provided. They were more involved in early stages of their research projects than in ongoing research activities. PPs valued their experience and also felt they had improved the research process and outcomes. This case study showed how PPs perceive their roles, but a more diverse group of PPs might have more differences in their experience. Abstract Background Patient engagement in primary care research is increasing and is now an expectation in many countries and funding agencies. In Canada, the Canadian Institutes of Health Research (CIHR) has mandated that patients be included as partners to guide the research process. Ontario’s Patient Engagement Resource Centre (PERC) was established in 2016 by the INNOVATIONS STRENGTHENING PRIMARY HEALTH CARE THROUGH RESEARCH (INSPIRE-PHC), one of 12 centres of excellence in the province funded under the CIHR’s Strategy for Patient-Oriented Research (SPOR) initiative. PERC’s mission is to support the authentic engagement of patients in primary care research. The present case study examines patients’ experience of engagement in INSPIRE-PHC research studies. Methods PERC conducted a web-based evaluation survey across the three INSPIRE-PHC studies that engaged patient partners (PPs). We used data collection tools developed by McMaster University (the Public and Patient Engagement Evaluation Tool (PPEET)) and the Patient-Centred Outcomes Research Institute (Ways of Engaging- ENgagement ACtivity Tool (WE-ENACT)) to assess patient experience and areas of involvement. These included both closed- and open-ended questions. Results The quantitative data showed that PPs were positive about their experience during research meetings, the value of collaboration, and the support that was provided to facilitate engagement. Most of them were highly involved in the initial stages of their research projects but much less involved in operational activities. The qualitative findings showed that, overall, PPs valued their experience, felt prepared to contribute and that their contributions were welcomed. In particular, they considered that they had improved the research process and outcomes. The majority also reported that they had learned from the experience and found it valuable. Conclusions This case study shows that patients engaged in three primary care research studies found the experience to be positive and felt that they had contributed to the research. This study adds to the literature on the evaluation of patient engagement in primary health care research. However, a study of a more diverse sample of PPs might elucidate differences in experience that could enrich future patient engagement activities.

Abstract A learning health system aims to create value in health systems using data‐driven innovations, quality improvement techniques, and collaborations between health system partners. Although the concept is mobilized through cycles of learning, most instantiations of the learning health system overlook the importance of formalized learning in educational settings. Social accountability in health professional education focuses on measurably improving people's health and health care, specifically through education and training activities. In this commentary, we argue that the idea of social accountability clearly articulates a rationale and a broad range of aspirations, whereas the learning health system offers an approach to achieve these goals. With a similar aim to a learning health system, social accountability promotes partnerships between health professional education, the health system, and communities in a way that allows for co‐designed and contextualized interventions. On the other hand, learning health systems prioritize data, research, and analytic capacities to facilitate quality improvement. An integrative framework could enhance learning cycles by collectively designing interventions and innovations with people and communities from health, research, and education systems. As well as aspiring to improve population health and health equity, such a framework will consider broader impacts, including the degree of participation amongst a range of partners and the level of responsiveness to partners' priorities.

Plain English summary Increasingly, health researchers are conducting their research in partnership with non-researchers such as patients and caregivers, advocacy groups, clinicians, and policymakers. The idea behind this partnership is to make research more relevant and appropriate. However, so far there is not much evidence about how this partnership or engagement actually affects research. We conducted an online survey of 12 teams in Canada that have engaged patients and other stakeholders in community based health research, partly as a requirement to obtain funding. We found that in many cases, the teams have engaged a wide variety and large number of stakeholders, and have involved them in many different stages of their research. Teams reported that their overall experience of this approach to research has been positive, but some challenges have been encountered along the way. Some teams found that it was difficult to communicate appropriately with all the stakeholders, and to keep them informed when research was going slowly. Other teams had trouble finding government representatives to work with. Several teams noted that engagement is time-consuming, and requires a lot of effort. Nevertheless, all teams reported that they had learned from the experience, and found it valuable. As a result, Canadian health care researchers are better positioned to engage with patients and other stakeholders in the future. Abstract Background Patient and other stakeholder engagement in research is increasingly important, but there is limited evidence of its impact. In 2013, the Canadian Institutes of Health Research launched a five-year Community Based Primary Health Care (CBPHC) initiative that funded 12 teams for innovative approaches to primary health care involving engagement with patients, communities, decision-makers, and clinicians across jurisdictions in Canada. The present study examines the extent of engagement by these teams, and the factors that affected it, either as challenges or opportunities. Methods We conducted a cross-sectional web-based survey across the 12 CBPHC Innovation Teams, in which we were also participants. We used a data collection tool developed by the Patient Centered Outcomes Research Institute that included both closed and open-ended questions. Results The quantitative data showed that the CBPHC Innovation teams have engaged with diverse stakeholders at different levels and in different stages of research. Almost all teams surveyed engaged with policymakers, most with clinicians and health system representatives, and more than half with patients, mostly at the level of consultation or collaboration. There were very few instances of stakeholder-led research reported. There was a near universal recognition of the importance of communications processes/tools in facilitating engagement, whereas time was the most commonly identified challenge. In almost all cases, challenges encountered were partially if not fully resolved. The qualitative findings showed that each team’s engagement was contextualized by factors such as the jurisdictions and geographic scope of the project, the number and type of stakeholders engaged and their level of involvement. These intersected with the researchers’ motivations for engagement, to give rise to diverse experiences, but ones that the CBPHC teams assessed positively as an approach to research. Conclusions Over the past five years, primary health care researchers in Canada have been actively engaging with patients and other stakeholders. The wide range, extent and nature of that engagement shows that these researchers have anticipated developments in this approach to research and are thus in a position to support and strengthen future efforts to understand the impact of this engagement on health care outcomes.

For hospital physicians, alignment of Continuing Professional Development (CPD) with quality improvement efforts is often absent or rudimentary. The purpose of this study was to evaluate a CPD development process that created accessible learning opportunities and aligned CPD with practice data. We conducted a chart audit to identify patient safety and quality of care issues within the institution, then established an eLearning approach that supported quick and cost effective development of high-quality interactive CPD opportunities. We tested a pilot module on the management of common infections in sub-acute care settings with fifteen (68%) residents and three staff physicians to evaluate the approach. One resident and three staff agreed to a follow-up interview. The satisfaction survey indicated that participants felt the content was generally appropriate and the module well designed. Significant improvements to knowledge were reported in the multi-drug resistance (Mean Difference = 25%, p = 0.002), infection management (MD = 32%, p

This paper presents a new astronomy self-efficacy instrument, composed of two factors; one relating to learning astronomy content, which we call astronomy personal self-efficacy, and the other relating to the use of astronomical instrumentation, specifically the use of remote robotic telescopes for data collection. The latter is referred to as the astronomy instrumental self-efficacy factor. The instrument has been tested for reliability and construct validity. Reliability testing showed that factor 1 had a Cronbach’s α of 0.901 and factor 2 had a Cronbach’s α of 0.937. Construct validity was established by computing one-way analyses of variances, with the p value suitably protected, using independent variables peripherally related to the constructs. These analyses demonstrate that both scales possess high construct validity. The development of this astronomy specific instrument is an important step in evaluating self-efficacy as a precursor to investigating the construct of science identity in the field of astronomy.

Abstract Background With the introduction of avoidant/restrictive food intake disorder (ARFID) in the Diagnostic and Statistical Manual – fifth edition, there is an increased need to understand the prevalence and pattern of food avoidance and restriction in adults. High rates of food allergy and intolerance in immunology clinic populations, and subsequent high rates of elimination diets, place these individuals at a greater risk of developing pathological eating behaviours. This descriptive cross sectional pilot study aims to provide preliminary data on the prevalence and nature of food avoidance and restriction in an adult population, and to explore the reasons for this behaviour. Method A self-administered questionnaire was designed and distributed to adults presenting to an immunology clinic and a general practice over the course of 6 months to describe the prevalence and nature of avoidant and restrictive eating behaviours in this population. Pearson’s chi square test was used to examine the strength of a potential link to a formal diagnosis of avoidant restrictive food intake disorder in these patients. Results A total of 102 completed questionnaires were used for data analysis. Food avoidance or restriction was detected in 81 respondents (79%), with rates not significantly higher in the immunology clinic group compared to the general practice group (p = .242). Food allergy and intolerance were the most common reasons for disturbed eating patterns. Life impact secondary to food avoidance and restriction was reported by 26% of respondents, with significantly higher rates observed in the immunology clinic cohort compared to the general practice (p = .011). Conclusions Eating disturbances similar to those characteristic of ARFID are very common in adults. Food avoidance and restriction due to perceived food allergy and intolerance are significant reasons for such disordered eating patterns, particularly in an immunology clinic population. Further investigation is needed to determine if such eating behaviours are pathological and whether they qualify for a diagnosis of ARFID.

Background. Electronic consultation (eConsultation) is a potential strategy to improve access to specialist expertise and facilitate collaborative care models. The Champlain BASE eConsult service allows for asynchronous communication between primary care providers (PCP) and specialists on a secure, web-based system. HIV experts accessible include HIV physician specialists, HIV pharmacists, and social workers with expertise in HIV. Objective. This study aims to describe the use, value, and utility of this eConsultation service in the care of people living with HIV and to characterize the common question types and clinical topics asked by PCPs. Methods. We analyzed the data from eConsults sent to the HIV specialty group in Ontario’s Champlain Local Health Integration Network between February 2015 and December 2017. Usage data and close-out survey responses were analyzed using descriptive statistics, eConsults were classified using a predefined list of validated taxonomy, and a thematic analysis was performed on the consultation logs to identify common clinical themes. Results. Among the 46 eConsults, the most common question type related to drug treatment (58.7%, n = 27) and management (19.6%, n = 9). The main clinical themes involved the care of significant complexities in people living with HIV, such as comorbidities and drug interactions, and suggestions of coordinated patient care. As well, eConsult was used for advice regarding pre-exposure prophylaxis for HIV-negative patients at risk of HIV infection. PCPs highly valued the eConsult service (average rating 4.8/5). Conclusion. Overall, this study demonstrates that eConsult provides an efficient and valuable service to PCPs caring for patients living with or at risk for HIV by improving access to HIV specialists and facilitating the delivery of team-based comprehensive care.

Our aesthetic response to the Universe, and the complexity of concepts through which we understand it, are inherently bound together in how we meaningfully interpret its nature. Over millennia the abstracted and intangible concepts of science have been developed and communicated through a rich array of representations across a variety of modes. The interpretation of such representations is a complex multidimensional and multimodal endeavor. This is particularly an issue in education where novices can struggle to engage with unfamiliar canonical representations. Learning in a discipline can be characterized as a process of developing disciplinary discernment in apprehending and using these representational systems. Using representations concerning the geometry of the Universe, evolution of the Universe, and cosmological expansion as examples, this paper provides an in-depth overview of the various multimodal representations through which concepts in cosmology are understood and communicated. In so doing this work unpacks the salient features of these representations in order to develop an underlying framework which we call the anatomy of representations (AOR). This study, in reviewing and analyzing representations in cosmology, explores this landscape of cosmology representations. This will allow for the characterization of how semiotic resources are mobilized, changed, and connections are made between various representational modes and levels, and an exploration of the landscape of cosmology and cosmology education. The AOR framework is intended as a guide for educators, including textbook authors, to support the development and interpretation of representations.

Pneumocystis jirovecii is a fungus that can cause life-threatening pneumonia in immunocompromised patients. Here, the authors sequence the genomes of P. jirovecii and two other Pneumocystisspecies, and show the unexpected absence of chitin (a near universal fungal cell wall component).

Objective: Childhood maltreatment has been consistently linked to posttraumatic stress disorder (PTSD) symptoms among college students and yoga may buffer the effects. The current study examined the frequency of college student's yoga practice over the past year as a moderator of childhood maltreatment and PTSD symptoms in the past 30 days. Participants: A sample of 177 college students from a southern university. Methods: Participants competed an online survey in exchange for extra credit or entry into a gift card raffle. Results: Moderation analysis indicated that a more frequent yoga practice buffered the relationship between maltreatment and PTSD symptoms. Conclusion: Clinicians working with college students with a history of maltreatment are encouraged to make referrals to yoga classes. Universities are encouraged to adopt trauma-sensitive yoga programs.

Over the years, there have been various calls to increase and better represent astronomy in curricula. This is motivated by views within the astronomy and astronomy education communities that the awe, wonder, and interdisciplinary nature of astronomy has the potential to engage students in STEM across disciplines. Reviews of curricula have shown that astronomy topics are represented in most mandated curricula around the world and although there is a homogeneity of astronomy topics in most mandated curricula, this representation has its limitations. By using the Australian National Curriculum, the USA-based Next Generation Science Standards (NGSS), and the Swedish National Curriculum as examples, this study unpacks ideas around "How much astronomy is enough?", the mismatches between astronomy topics in curricula and what constitutes astronomical literacy within the context of the Big Ideas in Astronomy document. The results identify that there is a significant gap at the galactic and extragalactic scales when considering the typical progression of astronomy topics when considering the conceptual, spatial, and temporal scales of the topics. Specifically, topics in curricula jump from tangible concepts within the student's immediate and Solar System spatial scales in primary school to cosmological spatial scales in upper high school, without reference to spatial and conceptual connecting topics at galactic scales. Potential sample curriculum statements drawn from the Big Ideas are presented as a suggested curriculum inclusion. This curricula gap is identified as a potential source of a similar gap in education research in these topics at these levels, which in turn perpetuates the problem by there being a lack of research-based evidence for inclusion in the curriculum.

In this paper, we present the results of an investigation into the effects of engaging with robotic telescopes during an Astronomy 101 (Astro101) course in the United States and Canada on the self-efficacy of students. Using an astronomy self-efficacy survey that measures both astronomy personal self-efficacy and instrumental self-efficacy, the authors probed their covariance with the respondents' experience of an Astro101 course that uses robotic telescopes to collect astronomical data. Strong effects on both self-efficacy scales were seen over the period of a semester utilizing a scalable educational design using robotic telescopes. After participation in the course, the results show that the gender gap in self-efficacy between self-identified men and women is largely reduced to statistically insignificant differences compared to the initial large significant difference.

To develop and validate a measure of the quality of the pediatric emergency department care experience from the parent perspective. This was a multiphase study conducted at a tertiary-care pediatric health system using qualitative and quantitative methods. A list of candidate questions was developed to measure each of eight dimensions of family-centered pediatric emergency care described in a published framework. This list was evaluated and refined using the Question Appraisal System (QAS-99) followed by cognitive interviewing methods. Remaining questions were field tested using survey methods via telephone interviews with randomly selected parents. Composite scores to measure each of the eight dimensions of family-centered pediatric emergency care were calculated. Reliability was evaluated using measures of internal consistency. Construct validity was evaluated by measuring the association of each question and composite scores with overall satisfaction. A pool of 77 questions was reduced to 51 using QAS-99 criteria. Cognitive interviews with 19 parents resulted in a final list of 24 questions for field testing. With a response rate of 46%, 404 parents participated in the field test. Each individual question exhibited a significant positive association with overall satisfaction. Measures of internal consistency did not support the composite scores based on the initial eight dimensions. An exploratory factor analysis resulted in alternative composite measures that exhibited acceptable reliability and construct validity. This study has resulted in a measure that can be used to inform quality improvement work aimed at improving the pediatric emergency department care experience.

Abstract Objective: To describe children's physical activity levels during childcare and associations with modifiable characteristics. Methods: A cross‐sectional study of 328 preschool children (43% girls; age 3–5 years) and 145 staff from 20 long day care centres in the Hunter Region of NSW, Australia. Pedometers assessed child physical activity levels. Centre characteristics and staff attitudes and behaviours towards children's physical activity were assessed using surveys, interviews and observational audit. Results were analysed using descriptive statistics and linear regression. Results: Over the measurement period, average step count of children was 15.8 (SD=6.8) steps/minute. Four‐year‐olds had the highest step counts (16.4, SD=7.1, p=0.03) with no differences by sex. Step counts were significantly higher in centres that had a written physical activity policy (+3.8 steps/minute, p=0.03) and where staff led structured physical activity (+3.7 steps/minute, p

A key to the pathogenic success of Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis, is the capacity to survive within host macrophages. Although several factors required for this survival have been identified, a comprehensive knowledge of such factors and how they work together to manipulate the host environment to benefit bacterial survival are not well understood. To systematically identify Mtb factors required for intracellular growth, we screened an arrayed, non-redundant Mtb transposon mutant library by high-content imaging to characterize the mutant-macrophage interaction. Based on a combination of imaging features, we identified mutants impaired for intracellular survival. We then characterized the phenotype of infection with each mutant by profiling the induced macrophage cytokine response. Taking a systems-level approach to understanding the biology of identified mutants, we performed a multiparametric analysis combining pathogen and host phenotypes to predict functional relationships between mutants based on clustering. Strikingly, mutants defective in two well-known virulence factors, the ESX-1 protein secretion system and the virulence lipid phthiocerol dimycocerosate (PDIM), clustered together. Building upon the shared phenotype of loss of the macrophage type I interferon (IFN) response to infection, we found that PDIM production and export are required for coordinated secretion of ESX-1-substrates, for phagosomal permeabilization, and for downstream induction of the type I IFN response. Multiparametric clustering also identified two novel genes that are required for PDIM production and induction of the type I IFN response. Thus, multiparametric analysis combining host and pathogen infection phenotypes can be used to identify novel functional relationships between genes that play a role in infection.

The Internet has become an important communication medium and it is having a significant impact on language use. The present study takes a “snapshot” of how the Polish language is currently used with modern communications technologies by Polish-Australians living in Melbourne. Through a questionnaire, it surveys which communications technologies Polish-Melburnians are familiar with, how and when Polish and English are used for online communication, and which language they prefer to use in various circumstances. The study is based on the belief that investigations of the natural patterns of new technology use by ethnic communities will help us understand how technology could be involved in initiatives aimed at increasing the levels of language transmission and maintenance. The present study identifies several factors interacting with Internet use in the community language and makes recommendations for applications of modern technology in ethnic language schools and for home language maintenance.