Building evidence into youth health policy: a case study of the Access 3 knowledge translation forum.

BACKGROUND: Effective integration of evidence and youth perspectives into policy is crucial for supporting the future health and well-being of young people. The aim of this project was to translate evidence from the Access 3 project to support development of a new state policy on youth health and well-being within New South Wales (NSW), Australia. Ensuring the active contribution of young people within policy development was a key objective of the knowledge translation (KT) process. METHODS: The KT activity consisted of a 1-day facilitated forum with 64 purposively sampled stakeholders. Participants included eight young people, 14 policy-makers, 15 academics, 22 clinicians or managers from NSW health services, four general practitioners and one mental health service worker. Research to be translated came from the synthesized findings of the NSW Access 3 project. The design of the forum included stakeholder presentations and group workshops, guided by the 2003 Lavis et al. KT framework that was improved by the Grimshaw et al. KT framework in 2012. Members of the Access 3 research team took on the role of knowledge brokers throughout the KT process. Participant satisfaction with the workshop was evaluated using a brief self-report survey. Policy uptake was determined through examination of the subsequent NSW Youth Health Framework 2017-2024. RESULTS: A total of 25 policy recommendations were established through the workshop, and these were grouped into six themes that broadly aligned with the synthesized findings from the Access 3 project. The six policy themes were (1) technology solutions, (2) integrated care and investment to build capacity, (3) adolescent health checks, (4) workforce, (5) youth participation and (6) youth health indicators. Forum members were asked to vote on the importance of individual recommendations. These policy recommendations were subsequently presented to the NSW Ministry of Health, with some evidence of policy uptake identified. The majority of participants rated the forum positively. CONCLUSIONS: The utilization of KT theories and active youth engagement led to the successful translation of research evidence and youth perspectives into NSW youth health policy. Future research should examine the implementation of policy arising from these KT efforts.

Weight perception and symptoms of depression in rural Australian adolescents.

OBJECTIVE: To investigate associations between measured and perceived weight, and symptoms of depression in rural Australian adolescents. METHOD: At baseline a prospective rural adolescent cohort study collected demographic data, measured weight and height, weight self-perception, and presence of depression (Short Mood and Feelings Questionnaire). Using World Health Organisation's (WHO) age and gender body mass index (BMI) standardisations, participants were classified into four perceptual groups: PG1 healthy/perceived healthy; PG2 overweight/perceived overweight; PG3 healthy/perceived overweight; and PG4 overweight/perceived healthy. Logistic regression analyses explored relationships between these groups and symptoms of depression. RESULTS: Data on adolescents (n = 339) aged 9-14. PG1 contained 63% of participants, PG2 18%, PG3 4% and PG4 14%. Across the cohort, 32% were overweight and 13% had symptoms of depression. PG2 (overweight/perceived overweight) were more likely to experience symptoms of depression than PG1 (healthy/perceived healthy; Adjusted Odds Ratio [AOR] 3.1, 95% CI 1.5-6.7). Females in PG3 (healthy/perceived overweight) were more likely to experience symptoms of depression (38%) than males (14%) and females in PG1 (10%, AOR 5.4, 95% CI 1.1-28.2). CONCLUSIONS: Results suggest that perceptions of being overweight may be a greater predictor for symptoms of depression than actual weight. This has public health implications for youth mental health screening and illness prevention.

Influenza infections in Australia 2009-2015: is there a combined effect of age and sex on susceptibility to virus subtypes?

BACKGROUND: Influenza is a global infectious disease with a large burden of illness and high healthcare costs. Those who experience greater burden of disease include younger and older people, and pregnant women. Although there are known age and sex susceptibilities, little is known about how the interaction of age and sex may affect a population's vulnerability to infection with different subtypes of influenza virus. METHODS: Laboratory-confirmed cases of influenza notified between 1 January 2009 and 31 December 2015 obtained from the Australian Government National Notifiable Diseases Surveillance System Influenza Public Data Set were analysed by age, sex and virus subtype. Age standardised notification rates per 100,000 population were calculated separately for females and males and used to generate female-to-male ratios with 95% confidence intervals for influenza A and B, and for virus subtypes A(H1N1)pdm09 and A(H3N2). RESULTS: 334,560 notifications for influenza A (all notifications), A(H1N1)pmd09, A(H3N2) and B subtypes from a total of 335,414 influenza notifications were analysed. Male notification rates were significantly higher for the 0 to 4 years old age group regardless of virus type or subtype; and higher for those aged 0 to 14 years and those 85 years and older for influenza types A and B and subtype A(H1N1)pdm09. Female notification rates were significantly higher for A(H1N1)pdm09 in those aged 15 to 54 years, for Type A and sub-type A(H3N2) in those aged 15 to 69 years, and for Influenza B in those aged 20 to 74 years. CONCLUSIONS: We observed a female dominance in notification rates throughout the adult age groups, which could possibly be related to health seeking behaviours. However, differences in health seeking behaviours cannot explain the variations observed across virus subtypes in the particular age groups with higher female notifications. Depending on their age, females may be more susceptible to certain subtypes of influenza virus. These observations suggest that there is an interaction between age and sex on susceptibility to influenza infection which varies by the subtype of the virus. The inclusion of pregnancy and menopausal status in surveillance data may assist development of targeted public health approaches during the emergence of new subtypes of influenza virus. Targeted vaccination campaigns may need to take into consideration specific age and sex groups who have a greater susceptibility to influenza infection as well as those who experience a greater burden of illness.

Health care equity and access for marginalised young people: a longitudinal qualitative study exploring health system navigation in Australia.

BACKGROUND: Young people have unique social, emotional and developmental needs that require a welcoming and responsive health system, and policies that support their access to health care. Those who are socially or culturally marginalised may face additional challenges in navigating health care, contributing to health inequity. The aim of this study was to understand health system navigation, including the role of technology, for young people belonging to one or more marginalised groups, in order to inform youth health policy in New South Wales, Australia. METHODS: This qualitative longitudinal study involved 2-4 interviews each over 6 to 12 months with marginalised young people aged 12-24 years living in NSW. The analysis used Nvivo software and grounded theory. RESULTS: We interviewed 41 young people at baseline who were living in rural or remote areas, sexuality and/or gender diverse, refugee, homeless, and/or Aboriginal. A retention rate of over 85% was achieved. Nineteen belonged to more than one marginalised group allowing an exploration of intersectionality. General practitioners (family physicians) were the most commonly accessed service throughout the study period. Participants were ambivalent about their healthcare journeys. Qualitative analysis identified five themes: 1. Technology brings opportunities to understand, connect and engage with services 2. Healthcare journeys are shaped by decisions weighing up convenience, engagement, effectiveness and affordability. 3. Marginalised young people perceive and experience multiple forms of discrimination leading to forgone care. 4. Multiple marginalisation makes health system navigation more challenging 5. The impact of health system complexity and fragmentation may be mitigated by system knowledge and navigation support CONCLUSIONS: The compounding effects of multiple discrimination and access barriers were experienced more strongly for young people belonging to mutiple marginalised groups. We identify several areas for improving clinical practice and policy. Integrating technology and social media into processes that facilitate access and navigation, providing respectful and welcoming services that recognise diversity, improving health literacy and involving professionals in advocacy and navigation support may help to address these issues.

The effects of estradiol on mood and behavior in human female adolescents: a systematic review.

UNLABELLED: Mood disorders and health risk behaviors increase in adolescence. Puberty is considered to contribute to these events. However, the precise impact of pubertal hormone changes to the emergence of mood disorders and risk behaviors is relatively unclear. It is important that inappropriate attribution is not made. Our aim was to determine what is known about the effect of endogenous estradiol on human adolescent girls' mood and behavior. The databases searched were MEDLINE, Embase, PsycINFO, Education Resources Information Center (ERIC), Pre-MEDLINE, Web of Science, and Scopus for all dates to October 2014. For inclusion, contemporaneous hormone and mood or behavioral assessment was required. Data were extracted following a template created by the authors. Fourteen studies met our inclusion criteria. There was some consistency in findings for mood and estradiol levels, with associations between estradiol and depression and emotional tone and risk taking. Results were less consistent for studies assessing other mood and behavioral outcomes. Most studies were cross-sectional in design; assay methodologies used in older studies may lack the precision to detect early pubertal hormone levels. CONCLUSION: Three longitudinal and several cross-sectional studies indicate potential associations between estradiol and certain mood or affective states, especially depression and mood variability though there are insufficient data to confirm that the rise in estradiol during puberty is causative. We believe that it is important for health professionals to take care when attributing adolescent psychopathology to puberty hormones, as the current data supporting these assertions are limited.

Association of urinary sex hormones with mood and behavior changes in a community adolescent cohort.

OBJECTIVE: To examine the contribution of variation in sex hormone excretion to mood and behavioral changes in adolescent females and males. DESIGN: Prospective, longitudinal observational cohort study. METHODS: Participants were 342 volunteers aged 10-12 years living in rural Australia. Urinary estradiol and testosterone levels measured by liquid chromatography-mass spectrometry were obtained at three-month intervals for three years. Integrated measures (area-under-curve) of urinary steroid excretion summarised as absolute and variability during each 12-month period of the study. Psychosocial data were gathered annually with the primary outcome of depressive symptomatology. Secondary outcomes were the other subscales of the Youth Self-Report, impulsive-aggression, sleep habits, and self-harm. RESULTS: 277 (158 male) participants contributed data over the full duration of the study and could be included in the analyses. In females, analyses of absolute urine hormone levels found no relationship between estradiol and any outcome, but higher testosterone was significantly associated with depression and poorer sleep. Greater variability of both urine estradiol and testosterone was associated with lower total psychopathology, anxious/depressed and social problems scores. Greater variability in urine estradiol was associated with lower attention problems and impulsive aggression in females. In males, higher testosterone and estradiol levels were associated with rule-breaking, and poorer sleep, and no associations were found for gonadal hormone variability for males. CONCLUSIONS: Longitudinal measurement of both iso-sexual and contra-sexual gonadal hormones contributes to a more nuanced view of the impact of sex steroids on mood and behavior in adolescents. These findings may enlighten the understanding of the impact of sex steroids during normal male and female puberty with implications for hormone replacement therapies as well as management of common mood and behavioral problems.

The study design and methodology for the ARCHER study--adolescent rural cohort study of hormones, health, education, environments and relationships.

BACKGROUND: Adolescence is characterized by marked psychosocial, behavioural and biological changes and represents a critical life transition through which adult health and well-being are established. Substantial research confirms the role of psycho-social and environmental influences on this transition, but objective research examining the role of puberty hormones, testosterone in males and oestradiol in females (as biomarkers of puberty) on adolescent events is lacking. Neither has the tempo of puberty, the time from onset to completion of puberty within an individual been studied, nor the interaction between age of onset and tempo. This study has been designed to provide evidence on the relationship between reproductive hormones and the tempo of their rise to adult levels, and adolescent behaviour, health and wellbeing. METHODS/DESIGN: The ARCHER study is a multidisciplinary, prospective, longitudinal cohort study in 400 adolescents to be conducted in two centres in regional Australia in the State of New South Wales. The overall aim is to determine how changes over time in puberty hormones independently affect the study endpoints which describe universal and risk behaviours, mental health and physical status in adolescents. Recruitment will commence in school grades 5, 6 and 7 (10-12 years of age). Data collection includes participant and parent questionnaires, anthropometry, blood and urine collection and geocoding. Data analysis will include testing the reliability and validity of the chosen measures of puberty for subsequent statistical modeling to assess the impact over time of tempo and onset of puberty (and their interaction) and mean-level repeated measures analyses to explore for significant upward and downward shifts on target outcomes as a function of main effects. DISCUSSION: The strengths of this study include enrollment starting in the earliest stages of puberty, the use of frequent urine samples in addition to annual blood samples to measure puberty hormones, and the simultaneous use of parental questionnaires.

Exploring rural patients' understanding of the types, risk factors and measures to prevent healthcare-associated infections in Australia.

BACKGROUND: In Australia, there are approximately 165,000 healthcare-associated infections (HAIs) per year. Improving patient knowledge on HAIs and actively involving them in infection prevention is essential. This study assessed patient knowledge on types of and risk factors for HAIs and their perceptions of HAI information provision and hospital infection control practices in rural New South Wales, Australia. METHODS: Medical and surgical ward patients in three rural hospitals completed a questionnaire between February and March 2019. Open ended responses were grouped under categories, decided upon by two researchers, one of which is an infection prevention and control nurse. Descriptive analysis was completed. RESULTS: A total of 153 patients completed the survey. Most (n = 126, 82%) participants were previously aware of HAIs, with common sources of education/information being family/friends (n = 55, 36%), television (n = 28, 18%), newspapers (n = 27, 18%), and previous experience of a HAI (n = 20, 13%). Satisfaction with infection control measures and hospital cleanliness was high. Over half (n = 83, 54%) of participants thought they received too little information on HAIs, and only 35% (n = 21) of those that had surgery reported receiving information. Participants suggested that more education for the general public (n = 117, 76%) and patients (n = 110, 72%) in both written form and verbally from hospital staff, and education outside of the hospital in various mediums, could help reduce the risk and rates of HAI. CONCLUSION: Awareness of HAIs amongst respondents was high, however, education appeared to be lacking. More can be done to inform patient, family and general public education programs in rural and regional Australian hospitals.

Intersectionality: Social Marginalisation and Self-Reported Health Status in Young People.

BACKGROUND: The aim of this study was to measure young people's health status and explore associations between health status and belonging to one or more socio-culturally marginalised group. METHODS: part of the Access 3 project, this cross-sectional survey of young people aged 12-24 years living in New South Wales, Australia, oversampled young people from one or more of the following groups: Aboriginal and or Torres Strait Islander; living in rural and remote areas; homeless; refugee; and/or, sexuality and/or gender diverse. This paper reports on findings pertaining to health status, presence of chronic health conditions, psychological distress, and wellbeing measures. RESULTS: 1416 participants completed the survey; 897 (63.3%) belonged to at least one marginalised group; 574 (40.5%) to one, 281 (19.8%) to two and 42 (3.0%) to three or four groups. Belonging to more marginalised groups was significantly associated with having more chronic health conditions (p = 0.001), a greater likelihood of high psychological distress (p = 0.001) and of illness or injury related absence from school or work (p < 0.05). CONCLUSIONS: increasing marginalisation is associated with decreasing health status. Using an intersectional lens can to be a useful way to understand disadvantage for young people belonging to multiple marginalised groups.

Serial measurement of mood via text messaging in young people.

BACKGROUND: To support longitudinal research into mood in adolescents we sought to assess the feasibility of collecting mood data via Short Message Service (SMS) over 3 years, and to investigate the relationship between SMS data and self-report measures of depression. METHODS: Prospective cohort study of young people aged 9 to 14 years at baseline. Participants completed Short Mood and Feelings Questionnaire (SMFQ) and the Youth Self Report Anxious/Depressed ((YSR)/AD) and Withdrawn/Depressed (YSR/WD) scales at baseline and annually for 3 years. In addition, at 3 monthly intervals they responded to an SMS asking them to rate their mood from 0 to 9 (9 highest). RESULTS: 277 young people (43% female) completed all four waves of the survey. There was a 87% response rate to requests for SMS Mood ratings. Mean SMS Mood decreased over time for females (p = 0.006) but not males (p = 0.45). We found an inverse association between SMS Mood and the SMFQ, YSR/AD and YSR/WD, scales in females and the SMFQ and YSR/WD scales in males. 45% of participants reported at least one SMS Mood rating score below 5, while 5% reported clusters of low SMS scores. Clusters of low SMS Mood scores were associated with SMFQ scores in the clinical range at 24 (OR = 4.45) and 36 months (OR = 4.72), and YSR/WD in the clinical range at 36 months (OR = 4.61). CONCLUSIONS: SMS Mood ratings represent a feasible means to augment but not replace assessment of mood obtained using standard instruments.

Predictors of young people's healthcare access in the digital age.

OBJECTIVE: To quantify barriers to healthcare for young people (12-24 years) and identify socio-demographic correlates and predictors. METHODS: This cross-sectional survey targeted young people living in New South Wales, Australia, with oversampling of marginalised groups. Principles Component Analysis (PCA) identified clusters of barriers. Ordinal regression identified predictors of each barrier cluster. RESULTS: A total of 1,416 young people completed surveys. Participants with chronic conditions and increasing psychological distress reported a greater number of barriers. Of 11 potential barriers to visiting a health service, cost was most common (45.8%). The PCA identified three clusters: structural barriers (61.3%), attitudinal barriers (44.1%) and barriers relating to emerging autonomy (33.8%). CONCLUSIONS: Barriers to healthcare reported by young people are multi-dimensional and have changed over time. Structural barriers, especially cost, are the most prominent among young people. Approaches to overcome structural barriers need to be addressed to better support marginalised young people's healthcare access. Implications for public health: Understanding predictors of different barrier types can inform more targeted approaches to improving access. Equitable access to healthcare is a priority for early diagnosis and treatment in young people, especially reducing out of pocket costs.

Foot Length Growth as a Novel Marker of Early Puberty.

Foot growth is part of overall pubertal growth but its relation to other anthropometric and hormonal changes is unclear. Our objective was to determine how foot length changes relate to changes in other growth parameters (height and weight), Tanner stage, and serum hormones. Adolescents (n = 342) were recruited to a 3-year longitudinal cohort study, underwent annual anthropometric assessments (height, weight, and foot length), and provided self-rated Tanner staging. They also provided blood samples that were analyzed using liquid chromatography-tandem mass spectrometry for serum testosterone and estradiol and classified as pre-pubertal or pubertal based on circulating hormone levels. Average annual percent increase in foot length was greater for pre-pubertal adolescents compared with pubertal. Increased foot length was associated with increases in height, weight, Tanner stage, and serum hormones in males and pre-menarcheal females but not post-menarcheal females. Foot length offers a novel, noninvasive, cost-effective, and easily demonstrable marker of early pubertal changes.

Self-rated Tanner stage and subjective measures of puberty are associated with longitudinal gonadal hormone changes.

Introduction In large community-based studies of puberty, Tanner staging by a clinician is often not possible. We compared self-rated Tanner staging and other subjective ratings of pubertal development with serum hormone levels measured by liquid chromatography-tandem mass spectrometry (LC-MS/MS) to reassess the utility of self-rated pubertal stage using highly sensitive and specific hormone analysis. Methods Adolescents and their parents enrolled in the Adolescent Rural Cohort study of Hormones and health, Education, environments and Relationships (ARCHER) answered annual survey questions on pubertal development. Annually, adolescents provided blood samples for serum testosterone and estradiol measured by LC-MS/MS. Results Longitudinally, self-rated Tanner stage was positively associated with serum testosterone and estradiol levels in both sexes. Confirmation by adolescent and parent that puberty had commenced was associated with higher gonadal hormone levels in both sexes. Parent and adolescent responses demonstrated 'fair' to 'moderate' agreement. Conclusions Over a 3-year follow-up, self-rated Tanner staging and simple questions regarding pubertal onset and development are positively associated with adolescent gonadal hormone concentrations in serum measured by mass spectrometry. Thus, self-report of puberty stage still has a role in large community-based studies where physical examination is not feasible.

Ghrelin and Peptide YY Change During Puberty: Relationships With Adolescent Growth, Development, and Obesity.

Context: Pubertal adolescents show strong appetites. How this is mediated is unclear, but ghrelin and peptide YY (PYY) play potentially important roles. Objective: To measure ghrelin and PYY change in relation to pubertal growth. Design: Three-year prospective cohort study. Setting: Australian regional community. Participants: Eighty healthy adolescents (26 girls; 54 boys) recruited at 10 to 13 years. Main Outcome Measures: Fasting circulating total ghrelin, total PYY, IGF-1, insulin, leptin (via radioimmunoassay), estradiol and testosterone (via mass spectrometry), anthropometry, and body composition (via bioelectrical impedance). Results: Adolescents exhibited normal developmental change. Mixed models revealed positive associations for ghrelin to age2 (both sexes: P < 0.05), indicating a U-shaped trend over time. Ghrelin was also inversely associated with IGF-1 (both sexes: P < 0.05), leptin in girls (P < 0.01), and insulin in boys (P < 0.05) and negatively correlated with annual height and weight velocity (both sexes: P ≤ 0.01). PYY showed no age-related change in either sex. Neither ghrelin nor PYY were associated with Tanner stage. Weight subgroup analyses showed significant ghrelin associations with age2 in healthy-weight but not overweight and obese adolescents (7 girls; 18 boys). Conclusions: Adolescents showed a U-shaped change in ghrelin corresponding to physical and biochemical markers of growth, and no change in PYY. The overweight and obesity subgroup exhibited an apparent loss of the U-shaped ghrelin trend, but this finding may be attributed to greater maturity and its clinical significance is unclear. Further research on weight-related ghrelin and PYY trends at puberty is needed to understand how these peptides influence growth and long-term metabolic risk.

Improving Teamwork and Patient Outcomes with Daily Structured Interdisciplinary Bedside Rounds: A Multimethod Evaluation.

BACKGROUND: Previous research has shown that interdisciplinary ward rounds have the potential to improve team functioning and patient outcomes. DESIGN: A convergent parallel multimethod approach to evaluate a hospital interdisciplinary ward round intervention and ward restructure. SETTING: An acute medical unit in a large tertiary care hospital in regional Australia. PARTICIPANTS: Thirty-two clinicians and inpatients aged 15 years and above, with acute episode of care, discharged during the year prior and the year of the intervention. INTERVENTION: A daily structured interdisciplinary bedside round combined with a ward restructure. MEASUREMENTS: Qualitative measures included contextual factors and measures of change and experiences of clinicians. Quantitative measures included length of stay (LOS), monthly "calls for clinical review," and cost of care delivery. RESULTS: Clinicians reported improved teamwork, communication, and understanding between and within the clinical professions, and between clinicians and patients, after the intervention implementation. There was no statistically significant difference between the intervention and control wards in the change in LOS over time (Wald ?2 = 1.05; degrees of freedom [df] = 1; P = .31), but a statistically significant interaction for cost of stay, with a drop in cost over time, was observed in the intervention group, and an increase was observed in the control wards (Wald ?2 = 6.34; df = 1; P = .012). The medical wards and control wards differed significantly in how the number of monthly "calls for clinical review" changed from prestructured interdisciplinary bedside round (SIBR) to during SIBR (F (1,44) = 12.18; P = .001). CONCLUSIONS: Multimethod evaluations are necessary to provide insight into the contextual factors that contribute to a successful intervention and improved clinical outcomes.

Access 3 project protocol: young people and health system navigation in the digital age: a multifaceted, mixed methods study.

BACKGROUND: The integration of digital technology into everyday lives of young people has become widespread. It is not known whether and how technology influences barriers and facilitators to healthcare, and whether and how young people navigate between face-to-face and virtual healthcare. To provide new knowledge essential to policy and practice, we designed a study that would explore health system access and navigation in the digital age. The study objectives are to: (1) describe experiences of young people accessing and navigating the health system in New South Wales (NSW), Australia; (2) identify barriers and facilitators to healthcare for young people and how these vary between groups; (3) describe health system inefficiencies, particularly for young people who are marginalised; (4) provide policy-relevant knowledge translation of the research data. METHODS AND ANALYSIS: This mixed methods study has four parts, including: (1) a cross-sectional survey of young people (12-24 years) residing in NSW, Australia; (2) a longitudinal, qualitative study of a subsample of marginalised young people (defined as young people who: identify as Aboriginal and/or Torres Strait Islander; are experiencing homelessness; identify as sexuality and/or gender diverse; are of refugee or vulnerable migrant background; and/or live in rural or remote NSW); (3) interviews with professionals; (4) a knowledge translation forum. ETHICS AND DISSEMINATION: Ethics approvals were sought and granted. Data collection commenced in March 2016 and will continue until June 2017. This study will gather practice and policy-relevant intelligence about contemporary experiences of young people and health services, with a unique focus on five different groups of marginalised young people, documenting their experiences over time. Access 3 will explore navigation around all levels of the health system, determine whether digital technology is integrated into this, and if so how, and will translate findings into policy-relevant recommendations.

Developing clinical rules to predict urinary tract infection in primary care settings: sensitivity and specificity of near patient tests (dipsticks) and clinical scores.

BACKGROUND: Suspected urinary tract infection (UTI) is one of the most common presentations in primary care. Systematic reviews have not documented any adequately powered studies in primary care that assess independent predictors of laboratory diagnosis. AIM: To estimate independent clinical and dipstick predictors of infection and to develop clinical decision rules. DESIGN OF STUDY: Validation study of clinical and dipstick findings compared with laboratory testing. SETTING: General practices in the south of England. METHOD: Laboratory diagnosis of 427 women with suspected UTI was assessed using European urinalysis guidelines. Independent clinical and dipstick predictors of diagnosis were estimated. RESULTS: UTI was confirmed in 62.5% of women with suspected UTI. Only nitrite, leucocyte esterase (+ or greater), and blood (haemolysed trace or greater) independently predicted diagnosis (adjusted odds ratios 6.36, 4.52, 2.23 respectively). A dipstick decision rule, based on having nitrite, or both leucocytes and blood, was moderately sensitive (77%) and specific (70%); positive predictive value (PPV) was 81% and negative predictive value (NPV) was 65%. Predictive values were improved by varying the cut-off point: NPV was 73% for all three dipstick results being negative, and PPV was 92% for having nitrite and either blood or leucocyte esterase. A clinical decision rule, based on having two of the following: urine cloudiness, offensive smell, and dysuria and/or nocturia of moderate severity, was less sensitive (65%) (specificity 69%; PPV 77%, NPV 54%). NPV was 71% for none of the four clinical features, and the PPV was 84% for three or more features. CONCLUSIONS: Simple decision rules could improve targeting of investigation and treatment. Strategies to use such rules need to take into account limited negative predictive value, which is lower than expected from previous research.

Insights into Facebook Pages: an early adolescent health research study page targeted at parents.

Facebook has been used in health research, but there is a lack of literature regarding how Facebook may be used to recruit younger adolescents. A Facebook Page was created for an adolescent cohort study on the effects of puberty hormones on well-being and behaviour in early adolescence. Used as a communication tool with existing participants, it also aimed to alert potential participants to the study. The purpose of this paper is to provide a detailed description of the development of the study Facebook Page and present the fan response to the types of posts made on the Page using the Facebook-generated Insights data. Two types of posts were made on the study Facebook Page. The first type was study-related update posts and events. The second was relevant adolescent and family research and current news posts. Observations on the use of and response to the Page were made over 1 year across three phases (phase 1, very low Facebook use; phase 2, high Facebook use; phase 3, low Facebook use). Most Page fans were female (88.6%), with the largest group of fans aged between 35 and 44 years. Study-related update posts with photographs were the most popular. This paper provides a model on which other researchers could base Facebook communication and potential recruitment in the absence of established guidelines.

Defining the rest interval associated with the main sleep period in actigraph scoring.

Actigraphy is increasingly used for sleep monitoring. However, there is a lack of standardized methodology for data processing and analysis, which often makes between study comparisons difficult, if not impossible, and thus open to flawed interpretation. This study evaluated a manual method for detection of the rest interval in actigraph data collected with Actiwatch 2. The rest interval (time in bed), defined as the bedtime and rise time and set by proprietary software, is an essential requirement for the estimation of sleep indices. This study manually and systematically detected the rest interval of 187 nights of recording from seven healthy males and three females, aged 13.5±0.7 (mean ± standard deviation) years. Data were analyzed for agreement between software default algorithm and manual scoring. Inter-rater reliability in manual scoring was also tested between two scorers. Data showed consistency between default settings and manual scorers for bedtime and rise time, but only moderate agreement for the rest interval duration and poor agreement for activity level at bedtime and rise time. Manual detection of rest intervals between scorers showed a high degree of agreement for all parameters (intraclass correlations range 0.864 to 0.995). The findings demonstrate that the default algorithm on occasions was unable to detect rest intervals or set the exact interval. Participant issues and inter-scorer issues also made difficult the detection of rest intervals. These findings have led to a manual detection protocol to define bedtime and rise time, supplemented with an event diary.