The effectiveness of secondary-school based interventions on the future physical activity of adolescents in Aotearoa New Zealand: a modelling study.

BACKGROUND: Secondary schools are important settings for promoting varied physical activity (PA) opportunities for adolescents to promote PA throughout life. However, research on the effect of secondary school-based interventions on future PA is limited. This study examined the potential impact of secondary school-based interventions on the determinants of future PA participation of Aotearoa New Zealand (NZ) adolescents using simulated modelling. METHODS: We used data from a nationally representative sample of secondary school students (n = 5035) aged 12-17 between 2017 and 2020 in NZ. We modelled four secondary school-based interventions and their projected impact on five determinants of future PA. Modelled interventions were the technological augmentation of physical education (TAPE), a peer-led PA mentoring programme (PL), physically active learning (PAL) and the inclusion of a natural environment play area (NE). RESULTS: Total weekly PA increased the most from the NE intervention (+ 0.2 h/week), followed by TAPE (+ 0.08 h/week), PAL (+ 0.05 h/week) and PL (-0.06 h/week). Current number of PA settings increased the most in NE (+ 1.75 settings/week), followed by TAPE (+ 1.29 settings/week), PAL (+ 1.21 settings/week) and PL (+ 0.73 settings/week). Current number of PA types increased the most in NE (+ 1.57 types/week), followed by PL (+ 1.05 types/week), TAPE (+ 0.34 types/week) and PAL (+ 0.15 types/week). Physical literacy scores increased the most from PL (+ 3.6%), followed by PAL (+ 3.3%), TAPE (+ 0.43%) and NE (+ 0.12%). Social support scores increased the most from PAL (+ 5%), followed by PL (+ 1.9%), TAPE (+ 1.46%) and NE (+ 0.57%). CONCLUSIONS: On average, all interventions benefitted determinants of future PA participation to a small degree. Results show differing magnitudes of the intervention effect by determinant, indicating the complexities surrounding the promotion of PA adherence. Future interventions could be improved through detailed consultation alongside, and involving, adolescents and stakeholders within schools. Researchers should also prioritise the collection of longitudinal PA data and explore its connection with sociodemographic differences between adolescents.

"Now is the time for institutions to be investing in growing exercise programs as part of standard of care": a multiple case study examining the implementation of exercise oncology interventions.

BACKGROUND: Implementation science seeks to systematically identify determinants, strategies, and outcomes within a causal pathway to help explain successful implementation. This process is applied to evidence-based interventions (EBIs) to improve their adoption, implementation, and sustainment. However, this method has not been applied to exercise oncology services, meaning we lack knowledge about implementing exercise EBIs in routine practice. This study aimed to develop causal pathways from the determinants, strategies (including mechanism of change), and implementation outcomes to explain exercise EBIs implementation in routine cancer care. METHODS: A multiple-case study was conducted across three healthcare sites in Australia. Sites selected had implemented exercise within routine care for people diagnosed with cancer and sustained the delivery of services for at least 12 months. Four data sources informed the study: semi-structured interviews with staff, document reviews, observations, and the Program Sustainability Assessment Tool (survey). Framework analysis was applied to understand the findings. The Implementation Research Logic Model was used to identify commonalities in implementation across sites and develop causal pathways. RESULTS: Two hundred and eighteen data points informed our findings. Across sites, 18 determinants and 22 implementation strategies were consistent. Sixteen determinants and 24 implementation strategies differed across sites and results of implementation outcomes varied. We identified 11 common pathways that when combined, help explain implementation processes. The mechanisms of implementation strategies operating within the pathways included (1) knowledge, (2) skills, (3) secure resources, (4) optimism, and (5) simplified decision-making processes associated with exercise; (6) relationships (social and professional) and support for the workforce; (7) reinforcing positive outcomes; (8) capability to action plan through evaluations and (9) interactive learning; (10) aligned goals between the organisation and the EBI; and (11) consumer-responsiveness. CONCLUSION: This study developed causal pathways that explain the how and why of successful implementation of exercise EBIs in cancer care. These findings can support future planning and optimisation activities by creating more opportunities for people with cancer to access evidence-based exercise oncology services. IMPLICATIONS FOR CANCER SURVIVORS: Understanding how to implement exercise within routine cancer care successfully is important so cancer survivors can experience the benefits of exercise.

Differences in physical activity participation among young adults in Aotearoa New Zealand.

BACKGROUND: The purpose of this study was to examine socio-demographic differences in physical activity (aerobic and muscle-strengthening) among young adults (18-24 years). METHODS: Data collected between 2017-2019 as a part of Sport New Zealand's Active NZ survey were examined using logistic regression analyses to determine the odds of participants meeting aerobic, muscle-strengthening and combined physical activity recommendations. Gender, ethnicity, employment/student status, disability status, and socio-economic deprivation were included as explanatory variables in analyses. RESULTS: The proportion of young adults meeting recommendations varied according to physical activity type (aerobic:63.2%; strength:40.1%; combined:37.2%). Young adults not employed/studying had lower odds of meeting recommendations than those full-time employed (OR = 0.43 [0.34-0.54]). Physical activity levels differ according to gender and this intersects with ethnicity, employment/student status, and social deprivation. For example, the odds of Pasifika young adults meeting combined physical activity recommendations compared to Europeans were not different (OR = 0.95 [0.76-1.19]), but when stratified by gender the odds were significantly higher for men (OR = 1.55 [1.11-2.16]) and significantly lower for women (OR = 0.64 [0.47-0.89]. Similarly, young adults in high deprivation areas had lower odds of meeting combined physical activity recommendations than those in low deprivation areas (OR = 0.81 [0.68-0.95]), but this was mainly due to the difference among women (OR = 0.68 [0.54-0.85]) as there was no difference among men (OR = 0.97 [0.76-1.25]). CONCLUSIONS: Intersections between socio-demographic characteristics should be considered when promoting physical activity among young adults in Aotearoa New Zealand, particularly young adults not employed/studying, and young women who live in deprived areas or identify as Asian or Pasifika. Tailored approaches according to activity type for each of these groups are required.

Pulmonary hypertension in preterm infants with moderate-to-severe bronchopulmonary dysplasia (BPD).

AIM: To describe clinical characteristics of pulmonary hypertension (PH) associated with moderate to severe BPD (MSBPD) in premature infants born ≤32 weeks gestation. METHODS: This was a single centre retrospective cohort study, with reanalysis of echocardiographic studies for PH of infants born ≤32 weeks gestation with MSBPD admitted to a tertiary surgical neonatal service. RESULTS: In total, 268 babies with MSBPD were included in the study. Incidence of BPD-associated PH (BPD-PH) was 12.6% (34), of which 41% infants were observed to have severe PH. On multivariate analysis, need for positive pressure respiratory support at 36 weeks post menstrual age (PMA) was independently associated with PH (p = 0.001; 95% CI 2-13.5) Presence of PH and severity of PH were associated with increased mortality. Of babies with MSBPD-PH, 32% died before discharge from the neonatal unit. CONCLUSION: Babies with MSBPD and PH are more likely to die before discharge from the neonatal unit. Need for positive pressure respiratory support at 36 weeks PMA is independently associated with PH. Babies with MSBPD with less than severe PH are also associated with increased mortality when compared to babies with MSBPD with no PH.

Community co-selection of measures to evaluate the health and wellbeing impact of Aboriginal and Torres Strait Islander community running groups.

ISSUE ADDRESSED: Physical activity participation can improve the physical health and social and emotional wellbeing of Aboriginal and Torres Strait Islander peoples. The evaluation of physical activity programmes can elicit a clearer understanding of where these impacts occur and to what extent. We describe applying a collaborative approach to the selection of a set of measures that can be used to examine health and wellbeing impacts of Indigenous community running groups. METHODS: Physical activity, health and wellbeing measurement tools previously used with Aboriginal and Torres Strait Islander peoples were collated. Participants in the collaborative process were nine female running group members aged 30+ years from a regional New South Wales (NSW) town. The Indigenous research method, Yarning, explored views of participating in the group on health and wellbeing and how these could be measured using those collated measurement tools. RESULTS: Runners described participating for holistic physical, mental and social reasons and stated the importance of the group participating together and providing social support to each other. There was broad support for the identified physical activity, lifestyle, physical health, and social and emotional wellbeing measures, with social networks and sports injuries identified as additionally relevant. CONCLUSIONS: Co-selecting measures to evaluate a physical activity programme for Aboriginal and Torres Strait Islander participants can better inform the development of relevant future healthy lifestyle programme evaluation, revealing factors that may be missed as relevant by researchers. SO WHAT?: This process presents an example of determining evaluation measures with Aboriginal and Torres Strait Islander participants that could be applied more broadly to evaluation design.

Results from Aotearoa New Zealand's 2022 Report Card on Physical Activity for Children and Youth: A call to address inequities in health-promoting activities.

Background: This article reports the methods and findings for Aotearoa New Zealand's 2022 Report Card on Physical Activity for Children and Youth indicators, and on inequities within these indicators. Methods: Grades were assigned to indicators using the Active Healthy Kids Global Alliance criteria depending on data availability, and inequities reported based on gender, ethnicity, disability status, area-level socioeconomic deprivation, urbanicity, and school year. Two additional indicators were included in this report card: Sleep, and Physical literacy. Results: Grades were assigned to indicators as follows: Overall physical activity: C+, Organised sport and physical activity: B-, Physical literacy: B, Active transportation: D, Sedentary behaviours: C-, Sleep: B+, Whanau (family) and peers: D, School: C+, Government: A. Inequities across all socio-demographic variables were observed. An 'inconclusive' grade was assigned to the Active play, Physical fitness, and Community and Environment indicators due to insufficient data. Conclusion: It is imperative that targeted, comprehensive, and population-specific approaches are implemented to support health-promoting physical activity behaviours and reduce inequities among children and youth in Aotearoa. There is a need to promote all dimensions of physical activity (overall activity, active play, recreation, organised sport, active transportation) and the reduction of screen time through policy, research, evidence-based social marketing campaigns, and urban design. Regular, nationally representative surveys that enable the consistent and regular measurement of key Report Card indicators are needed.

Repeatability of PDA diameter measurements on echocardiography.

Diameter of the patent ductus arteriosus (PDA) on transthoracic echocardiography (TTE) is used as a marker of haemodynamic significance. We aimed to assess the intra- and inter-observer variability in PDA diameter in babies born at ≤ 30 weeks' gestation. TTEs for 56 infants were performed by a single neonatologist. Cineloops were stored without measurement annotations. PDAs were measured on 2-dimensional (2D) and Colour Doppler. A second, blinded neonatologist repeated measurements on the same cineloops. The scanning neonatologist repeated measurements at a later date, blinded to original measurements. Inter-observer results showed repeatability coefficients of 1.57 (2D) and 2.18 (Colour), and repeatability index of 73% (2D) and 91% (Colour). Intra-observer results showed repeatability coefficients of 0.99 (2D) and 1.32 (Colour), and repeatability index of 43% (2D) and 49% (Colour).Conclusion: There is significant inter- and intra-observer variability in measurements of PDA diameter, even on the same cineloops. We advise caution when using diameter alone as a marker of haemodynamic significance, and recommend using multiple parameters to determine haemodynamic significance of PDA. What is Known: • PDA is associated with numerous comorbidities such as bronchopulmonary dysplasia, necrotising enterocolitis, intraventricular haemorrhage and mortality. • PDA diameter is commonly measured on transthoracic echocardiography and used as a marker of haemodynamic significance. • A previous, smaller study has shown there may be poor repeatability of PDA diameter measurements in serial echocardiograms. What is New: • There is significant inter-observer variability in 2D and Colour Doppler measurements of PDA internal diameter on TTE in preterm infants. • There is moderate intra-observer correlation of repeated measurements on the same imaging in both 2D and Colour Doppler imaging.

Exercise interventions for people diagnosed with cancer: a systematic review of implementation outcomes.

PURPOSE: Exercise is efficacious for people living after a cancer diagnosis. However, implementation of exercise interventions in real-world settings is challenging. Implementation outcomes are defined as 'the effects of deliberate and purposive actions to implement new treatments, practices, and services'. Measuring implementation outcomes is a practical way of evaluating implementation success. This systematic review explores the implementation outcomes of exercise interventions evaluated under real-world conditions for cancer care. METHODS: Using PRISMA guidelines, an electronic database search of Medline, PsycInfo, CINAHL, Web of Science, SportsDiscus, Scopus and Cochrane Central Registry of Controlled Trials was conducted for studies published between January 2000 and February 2020. The Moving through Cancer registry was hand searched. The Implementation Outcomes Framework guided data extraction. Inclusion criteria were adult populations with a cancer diagnosis. Efficacy studies were excluded. RESULTS: Thirty-seven articles that described 31 unique programs met the inclusion criteria. Implementation outcomes commonly evaluated were feasibility (unique programs n = 17, 54.8%) and adoption (unique programs n = 14, 45.2%). Interventions were typically delivered in the community (unique programs n = 17, 58.6%), in groups (unique programs n = 14, 48.3%) and supervised by a qualified health professional (unique programs n = 14, 48.3%). Implementation outcomes infrequently evaluated were penetration (unique programs n = 1, 3.2%) and sustainability (unique programs n = 1, 3.2%). CONCLUSIONS: Exercise studies need to measure and evaluate implementation outcomes under real-world conditions. Robust measurement and reporting of implementation outcomes can help to identify what strategies are essential for successful implementation of exercise interventions. IMPLICATIONS FOR CANCER SURVIVORS: Understanding how exercise interventions can be successful implemented is important so that people living after a cancer diagnosis can derive the benefits of exercise.

A modified Delphi study to enhance and gain international consensus on the Physical Activity Messaging Framework (PAMF) and Checklist (PAMC).

INTRODUCTION: Physical activity messaging is an important step in the pathway towards improving population physical activity levels, but best practice is not yet understood. A gap in the literature exists for a physical activity messaging framework to help guide creation and evaluation of messages. This study aimed to further develop and improve, and gain international expert consensus on, a standardised Physical Activity Messaging Framework and Checklist. METHODS: A modified Delphi study consisting of three online survey rounds was conducted. Each survey gathered feedback from an international expert panel using quantitative and qualitative methods. The framework and checklist were amended between each round based on survey results until consensus (defined a priori as 80% agreement) was reached. RESULTS: The final expert panel (n = 40, 55% female) came from nine countries and comprised academics (55%), healthcare and other professionals (22.5%) and government officials or policymakers (22.5%). Consensus was reached in survey 3 with 85 and 87.5% agreement on the framework and checklist, respectively. CONCLUSION: This study presents an expert- and evidence-informed framework and checklist for physical activity messaging. If used consistently, the Physical Activity Messaging Framework and Checklist may improve practice by encouraging evidence-based and target audience-focused messages, as well as enhance the research base on physical activity messaging by harmonising key terminologies and improving quality of reporting. Key next steps include further refining the Physical Activity Messaging Framework and Checklist based on their use in real-world settings.

The Physical Activity Messaging Framework (PAMF) and Checklist (PAMC): International consensus statement and user guide.

Effective physical activity messaging plays an important role in the pathway towards changing physical activity behaviour at a population level. The Physical Activity Messaging Framework (PAMF) and Checklist (PAMC) are outputs from a recent modified Delphi study. This sought consensus from an international expert panel on how to aid the creation and evaluation of physical activity messages. In this paper, we (1) present an overview of the various concepts within the PAMF and PAMC, (2) discuss in detail how the PAMF and PAMC can be used to create physical activity messages, plan evaluation of messages, and aid understanding and categorisation of existing messages, and (3) highlight areas for future development and research. If adopted, we propose that the PAMF and PAMC could improve physical activity messaging practice by encouraging evidence-based and target population-focused messages with clearly stated aims and consideration of potential working pathways. They could also enhance the physical activity messaging research base by harmonising key messaging terminologies, improving quality of reporting, and aiding collation and synthesis of the evidence.

Vasopressors in Trauma: A Never Event?

Vasopressor use in severely injured trauma patients is discouraged due to concerns that vasoconstriction will worsen organ perfusion and result in increased mortality and organ failure in hypotensive trauma patients. Hypotensive resuscitation is advocated based on limited data that lower systolic blood pressure and mean arterial pressure will result in improved mortality. It is classically taught that hypotension and hypovolemia in trauma are associated with peripheral vasoconstriction. However, the pathophysiology of traumatic shock is complex and involves multiple neurohormonal interactions that are ultimately manifested by an initial sympathoexcitatory phase that attempts to compensate for acute blood loss and is characterized by vasoconstriction, tachycardia, and preserved mean arterial blood pressure. The subsequent hypotension observed in hemorrhagic shock reflects a sympathoinhibitory vasodilation phase. The objectives of hemodynamic resuscitation in hypotensive trauma patients are restoring adequate intravascular volume with a balanced ratio of blood products, correcting pathologic coagulopathy, and maintaining organ perfusion. Persistent hypotension and hypoperfusion are associated with worse coagulopathy and organ function. The practice of hypotensive resuscitation would appear counterintuitive to the goals of traumatic shock resuscitation and is not supported by consistent clinical data. In addition, excessive volume resuscitation is associated with adverse clinical outcomes. Therefore, in the resuscitation of traumatic shock, it is necessary to target an appropriate balance with intravascular volume and vascular tone. It would appear logical that vasopressors may be useful in traumatic shock resuscitation to counteract vasodilation in hemorrhage as well as other clinical conditions such as traumatic brain injury, spinal cord injury, multiple organ dysfunction syndrome, and vasodilation of general anesthetics. The purpose of this article is to discuss the controversy of vasopressors in hypotensive trauma patients and advocate for a nuanced approach to vasopressor administration in the resuscitation of traumatic shock.

The Bitter and the Sweet: Relationship of Lactate, Glucose, and Mortality After Severe Blunt Trauma.

BACKGROUND: Hyperglycemia is associated with mortality after trauma; however, few studies have simultaneously investigated the association of depth of shock and acute hyperglycemia. We evaluated lactate, as a surrogate measure for depth of shock, and glucose levels on mortality following severe blunt trauma. We hypothesize that measurements of both lactate and glucose are associated with mortality when considered simultaneously. METHODS: This is a retrospective cohort study at a single academic trauma center. Inclusion criteria are age 18-89 years, blunt trauma, injury severity score (ISS) ≥15, and transferred from the scene of injury. All serum blood glucose and lactate values were analyzed within the first 24 hours of admission. Multiple metrics of glucose and lactate were calculated: first glucose (Glucadm) and lactate (Lacadm) at hospital admission, mean 24-hour after hospital admission glucose (Gluc24-hMean) and lactate (Lac24-hMean), maximum 24-hour after hospital admission glucose (Gluc24-hMax) and lactate (Lac24-hMax), and time-weighted 24-hour after hospital admission glucose (Gluc24-hTW) and lactate (Lac24-hTW). Primary outcome was in-hospital mortality. Multivariable logistic regression modeling assessed the odds ratio (OR) of mortality, after adjusting for confounding variables. RESULTS: A total of 1439 trauma patients were included. When metrics of both glucose and lactate were analyzed, after adjusting for age, ISS, and admission shock index, only lactate remained significantly associated with mortality: Lacadm (OR, 1.28; 95% confidence interval [CI], 1.13-1.44); Lac24-hMean (OR, 1.86; 95% CI, 1.52-2.28); Lac24-hMax (OR, 1.39; 95% CI, 1.23-1.56); and Lac24-hTW (OR, 1.86; 95% CI, 1.53-2.26). CONCLUSIONS: Lactate is associated with mortality in severely injured blunt trauma patients, after adjusting for injury severity, age, and shock index. However, we did not find evidence for an association of glucose with mortality after adjusting for lactate.

Mediators of focused psychosocial support interventions for children in low-resource humanitarian settings: analysis from an Individual Participant Dataset with 3,143 participants.

BACKGROUND: Research on psychosocial interventions has been focused on the effectiveness of psychosocial interventions on mental health outcomes, without exploring how interventions achieve beneficial effects. Identifying the potential pathways through which interventions work would potentially allow further strengthening of interventions by emphasizing specific components connected with such pathways. METHODS: We conducted a preplanned mediation analysis using individual participant data from a dataset of 11 randomized controlled trials (RCTs) which compared focused psychosocial support interventions versus control conditions for children living in low- and middle-income countries (LMICs) affected by humanitarian crises. Based on an ecological resilience framework, we hypothesized that (a) coping, (b) hope, (c) social support, and (d) functional impairment mediate the relationship between intervention and outcome PTSD symptoms. A systematic search on the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, PubMed, PyscARTICLES, Web of Science, and the main local LMICs databases was conducted up to August 2018. The hypotheses were tested by using individual participant data obtained from study authors of all the studies included in the systematic review. RESULTS: We included 3,143 children from 11 studies (100% of data from included studies), of which 1,877 from six studies contributed to the mediation analysis. Functional impairment was the strongest mediator for focused psychosocial interventions on PTSD (mediation coefficient -0.087, standard error 0.040). The estimated proportion of effect mediated by functional impairment, and adjusted for confounders, was 31%. CONCLUSIONS: Findings did not support the proposed mediation hypotheses for coping, hope, and social support. The mediation through functional impairment may represent unmeasured proxy measures or point to a broader mechanism that impacts self-efficacy and agency.

Musculoskeletal Trauma in Critically Injured Patients: Factors Leading to Delayed Operative Fixation and Multiple Organ Failure.

BACKGROUND: Musculoskeletal injuries are common following trauma and variables that are associated with late femur fracture fixation are important to perioperative management. Furthermore, the association of late fracture fixation and multiple organ failure (MOF) is not well defined. METHODS: We performed a retrospective cohort investigation from 2 academic trauma centers. INCLUSION CRITERIA: age 18-89 years, injury severity score (ISS) >15, femoral shaft fracture requiring operative fixation, and admission to the intensive care unit >2 days. Admission physiology variables and abbreviated injury scale (AIS) scores were obtained. Lactate was collected as a marker of shock and was described as admission lactate (LacAdm) and as 24-hour time-weighted lactate (LacTW24h), which reflects an area under the curve and is considered a marker for the overall depth of shock. The primary aim was to evaluate clinical variables associated with late femur fracture fixation (defined as ≥24 hours after admission). A multivariable logistic regression model tested variables associated with late fixation and is reported by odds ratio (OR) with 95% confidence interval (CI). The secondary aim evaluated the association between late fixation and MOF, defined by the Denver MOF score. The summation of scores (on a scale from 0 to 3) from the cardiac, pulmonary, hepatic, and renal systems was calculated and MOF was confirmed if the total daily sum of the worst scores from each organ system was >3. We assessed the association between late fixation and MOF using a Cox proportional hazards model adjusted for confounding variables by inverse probability weighting (a propensity score method). A P value <.05 was considered statistically significant. RESULTS: One hundred sixty of 279 (57.3%) patients received early fixation and 119 of 279 (42.7%) received late fixation. LacTW24h (OR = 1.66 per 1 mmol/L increase, 95% CI, 1.24-2.21; P < .001) and ISS (OR = 1.07 per 1-point increase, 95% CI, 1.03-1.10; P < .001) were associated with higher odds of late fixation. Late fixation was associated with a 3-fold increase in the odds of MOF (hazard ratio [HR] = 3.21, 95% CI, 1.48-7.00; P < .01). CONCLUSIONS: In a cohort of multisystem trauma patients with femur fractures, greater injury severity and depth of shock, as measured by LacTW24h, were associated with late operative fixation. Late fixation was also associated with MOF. Strategies to reduce the burden of MOF in this population require further investigation.

Viscoelastic Signals for Optimal Resuscitation in Trauma: Kaolin Thrombelastography Cutoffs for Diagnosing Hypofibrinogenemia (VISOR Study).

BACKGROUND: Acute traumatic coagulopathy is common in trauma patients. Prompt diagnosis of hypofibrinogenemia allows for early treatment with cryoprecipitate or fibrinogen concentrate. At present, optimal cutoffs for diagnosing hypofibrinogenemia with kaolin thrombelastography (TEG) have not been established. We hypothesized that kaolin kaolin-TEG parameters, such as kinetic time (K-time), α-angle, and maximum amplitude (MA), would accurately diagnose hypofibrinogenemia (fibrinogen <200 mg/dL) and severe hypofibrinogenemia (fibrinogen <100 mg/dL). METHODS: Adult trauma patients (injury severity score >15) presenting to our trauma center between October 2015 and October 2017 were identified retrospectively. All patients had a traditional plasma fibrinogen measurement and kaolin-TEG performed within 15 minutes of each other and within 1 hour of admission. Some patients had additional measurements after. Receiver operating characteristic (ROC) curve analysis was performed to evaluate whether K-time, α-angle, and MA could diagnose hypofibrinogenemia and severe hypofibrinogenemia. Area under the ROC curve (AUROC) was calculated for each TEG parameter with a bootstrapped 99% confidence interval (CI). Further, ROC analysis was used to estimate ideal cutoffs for diagnosing hypofibrinogenemia and severe hypofibrinogenemia by maximizing sensitivity and specificity. In addition, likelihood ratios were also calculated for different TEG variable cutoffs to diagnose hypofibrinogenemia and severe hypofibrinogenemia. RESULTS: Seven hundred twenty-two pairs of TEGs and traditional plasma fibrinogen measurements were performed in 623 patients with 99 patients having additional pairs of tests after the first hour. MA (AUROC = 0.84) and K-time (AUROC = 0.83) better diagnosed hypofibrinogenemia than α-angle (AUROC = 0.8; P = .03 and P < .001 for AUROC comparisons, respectively). AUROCs statistically improved for each parameter when severe hypofibrinogenemia was modeled as the outcome (P < .001). No differences were found between parameters for diagnosing severe hypofibrinogenemia (P > .05 for all comparisons). The estimated optimal cutoffs for diagnosing hypofibrinogenemia were 1.5 minutes for K-time (95% CI, 1.4-1.6), 70.0° for α-angle (95% CI, 69.8-71.0), and 60.9 mm for MA (95% CI, 59.2-61.8). The estimated optimal cutoffs for diagnosing severe hypofibrinogenemia were 2.4 minutes for K-time (95% CI, 1.7-2.8), 60.6° for α-angle (95% CI, 57.2-67.3), and 51.2 mm for MA (95% CI, 49.0-56.2). Currently recommended K-time and α-angle cutoffs from the American College of Surgeons had low sensitivity for diagnosing hypofibrinogenemia (3%-29%), but sensitivity improved to 74% when using optimal cutoffs. CONCLUSIONS: Kaolin-TEG parameters can accurately diagnose hypofibrinogenemia and severe hypofibrinogenemia in trauma patients. Currently recommended cutoffs for the treatment of hypofibrinogenemia are skewed toward high specificity and low sensitivity. Many patients are likely to be undertreated for hypofibrinogenemia using current national guidelines.

Correction to: Running on a high: parkrun and personal well-being.

It was highlighted that the original article [1] contained an error in the proportions reported in the Results, at the Representativeness of registered parkrunners section.

Associations between sociodemographic and behaviour factors, and dietary risk factors for overweight and obesity, in Samoan women.

Adults in Samoa have the third highest obesity prevalence in the world, and the prevalence is higher in women than men. The nutritional status of a household in most low- and middle-income countries is positively influenced by the level of control women have over financial resources. Our analysis examined how consumption of specific dietary groups was associated with different sociodemographic and individual health risk factor groups for women who participated in the 2014 Samoa Demographic and Health Survey. Our research question was explored through multivariate analysis of the 2014 Samoa Demographic and Health Survey dataset. The sociodemographic and health behaviour groups included in our analysis were: urban vs. rural residence, wealth quintile, education level, participation in physical activity program, lives with husband/partner, household size, parity, age, smoking, and alcohol consumption. The following diet variables were included: fruit, vegetables, seafood, high-fat food, sugary drinks, high-salt food, and high-sugar food consumption. There was a high prevalence of unhealthy food consumption and unhealthy dietary patterns among a) a large proportion of the population, and b) across sociodemographic and health behaviour groups, with a higher prevalence of particular at-risk patterns in some specific groups including women of younger age and women of higher wealth. Our analysis highlighted some specific opportunities for policy action, including the need to create an enabling environment for healthier food consumption for Samoan women.

Understanding physical activity patterns among rural Aboriginal and non-Aboriginal young people.

INTRODUCTION: Physical activity across the lifespan is essential to good health but participation rates are generally lower in rural areas and among Aboriginal Australians. Declines in moderate-to-vigorous physical activity (MVPA) commence before adolescence but descriptive epidemiology of patterns of physical activity among Aboriginal children is limited. MVPA variation by season, setting and type at two time points among rural Aboriginal and non-Aboriginal Australian children was examined. METHODS: Children aged 10-14 years in 38 schools in two rural New South Wales towns during 2007-2008 (T1) and 2011-2012 (T2) self-reported time spent engaged in MVPA for different types, settings and seasons, totalling 14 components: organised, non-organised, club, school, travel to/from school, after school and weekend - in both summer and winter. Linear mixed models assessed MVPA mean minutes and 95% confidence intervals for Aboriginal and non-Aboriginal children and between-group mean differences over time. RESULTS: A total of 1545 children (246 Aboriginal) at T1 and 923 children (240 Aboriginal) at T2 provided data. Overall MVPA, travel to/from school (summer and winter) and after-school activity (winter) declined over time in both groups (p≤0.005). Significant declines occurred in non-organised, school (summer and winter) and organised (winter) activity among Aboriginal children only. There were differences according to Aboriginality from T1 to T2 for school (summer and winter; p<0.001), weekend (summer; p=0.02) and winter organised (winter; p<0.001) activity . CONCLUSIONS: While overall physical activity declines occurred between 2007-208 (T1) and 2011-2012 (T2) in both Aboriginal and non-Aboriginal rural-dwelling children, declines in particular components of physical activity were greater among Aboriginal compared to non-Aboriginal children. A multi-strategy, holistic approach to increase physical activity during the critical time of adolescence is necessary.

Five-year trends in perioperative red blood cell transfusion from index cases in five surgical specialties: 2011 to 2015.

BACKGROUND: Red blood cell (RBC) transfusion can be life-saving; however, the risks of RBC transfusion have been increasingly recognized, and current guidelines recommend restrictive transfusion in most patients. We hypothesized that RBC transfusions are decreasing in surgical patients. STUDY DESIGN AND METHODS: A retrospective review of the National Surgical Quality Improvement Program database was performed from 2011 to 2015. Index cases in five surgical specialties were studied: neurosurgery, thoracic surgery, gynecologic surgery, orthopedic surgery, and vascular surgery. Patient characteristics, preoperative laboratory values, and surgery details were compared between years. The study's primary outcome was perioperative RBC transfusion, which was compared over the 5-year period for each specialty. Secondary outcomes were myocardial infarction and renal failure after surgery. In addition, trends in RBC transfusion between low-risk and high-risk patients and between emergency and elective surgery were examined. RESULTS: RBC transfusion decreased in all surgical specialties except for thoracic and gynecologic surgery. RBC transfusion decreased substantially in orthopedic surgery, falling from 22.4% in 2011 to 6.3% in 2015 (p ≤ 0.0001). High-risk patients had greater reductions in the receipt of RBC transfusion than low-risk patients, and there were no increases in myocardial infarction or renal failure after surgery in any specialty. CONCLUSION: RBC transfusion appears to be decreasing across multiple surgical specialties, with no apparent increase in myocardial infarctions or renal failure. This likely represents an important improvement in patient care. Continued efforts are needed to develop patient blood management programs and further reduce RBC transfusion.