Factors associated with parental rules for adolescent alcohol use

This study used the Resilient Families baseline survey to examine associations between the connectedness of parents within the school and parents' rules regarding their children's use of alcohol, prior participation in parenting education, and parents' demographic characteristics. The study involved parents of Year 7 students (mean age 12 years) at secondary schools in Melbourne, Australia (N = 1,238; 2004). Most parents (54%) had no connections with parents of other children in their child's school year. Allowing children to have sips of alcohol or drinks on special occasions was reported by 23% and 6% of parents, respectively, but neither was significantly associated with parental connectedness. Copyright © 2014 Informa Healthcare USA, Inc.

Tree-based iterated local search for Markov random fields with applications in image analysis

The maximum a posteriori assignment for general structure Markov random fields is computationally intractable. In this paper, we exploit tree-based methods to efficiently address this problem. Our novel method, named Tree-based Iterated Local Search (T-ILS), takes advantage of the tractability of tree-structures embedded within MRFs to derive strong local search in an ILS framework. The method efficiently explores exponentially large neighborhoods using a limited memory without any requirement on the cost functions. We evaluate the T-ILS on a simulated Ising model and two real-world vision problems: stereo matching and image denoising. Experimental results demonstrate that our methods are competitive against state-of-the-art rivals with significant computational gain.

Maternal efficacy and sedentary behavior rules predict child obesity resilience

Abstract
Background:
To identify longitudinal individual, social and environmental predictors of adiposity (BMI z-score),
and of resilience to unhealthy weight gain, in healthy weight children and adolescents.
Methods:
Two hundred healthy weight children aged 5–12 years at baseline and their parents living in socio-economically disadvantaged neighborhoods were surveyed at baseline and three years later. Children’s height and weight were objectively measured, parents completed a detailed questionnaire that examined the home, social and neighborhood environments, and objective measures of the neighborhood environment were assessed using geographic information system data. Ch
ildren classified as healthy weight at baseline who had
small or medium increases in their BMI z-score between baseline and three year follow up (those in the bottom
and middle tertiles) were categorized as‘ resilient to unhealthy weight gain’. Where applicable, fully adjusted
multivariable regression models were employed to determine baseline intrapersonal, social and environmental predictors of child BMI z-scores at follow-up, and resilience to unhealthy weight gain at
follow-up.
Results:
Maternal efficacy for preventing their child from engaging in sedentary behaviors (B = − 0.03, 95 % CI: 0.06, 0.00) was associated with lower child BMI z-score at follow up. Rules to limit sedentary behaviors (OR = 1.14, 95 % CI: 1.03, 1.25) was a predictor of being resilient to unhealthy weight gain.
Conclusion:
The findings suggest that strategies to support parents to limit their children ’s sedentary behavior may be important in preventing unhealthy weight gain in socioeconomically disadvantaged communities.

Geographical dimensions of imagined futures: post school participation in education and work in peri-urban and regional Australia

This paper discusses preliminary findings from a sub-set of empirical data collected for a recent NCVER study that explored the geographic dimensions of social exclusion in four locations in Victoria and South Australia with lower than average post school education participation. Set against the policy context of the Bradley Review (2008) and the drive to increase the post-school participation of young people from low socio-economic status neighbourhoods, this qualitative research study, responding to identified gaps in the literature, sought a nuanced understanding of how young people make decisions about their post-school pathways. Drawing on Appadurai’s (2004) concept ‘horizons of aspiration’ the paper explores the aspirations of two young people formed from, and within, their particular rural ‘neighborhoods’. The paper reveals how their post-school education and work choices, imagined futures and conceptions of a ‘good life’, have topographic and gendered influences that are important considerations for policy makers.

The use of kernel density estimation to examine associations between neighborhood destination intensity and walking and physical activity

BACKGROUND: Local destinations have previously been shown to be associated with higher levels of both physical activity and walking, but little is known about how the distribution of destinations is related to activity. Kernel density estimation is a spatial analysis technique that accounts for the location of features relative to each other. Using kernel density estimation, this study sought to investigate whether individuals who live near destinations (shops and service facilities) that are more intensely distributed rather than dispersed: 1) have higher odds of being sufficiently active; 2) engage in more frequent walking for transport and recreation. METHODS: The sample consisted of 2349 residents of 50 urban areas in metropolitan Melbourne, Australia. Destinations within these areas were geocoded and kernel density estimates of destination intensity were created using kernels of 400m (meters), 800m and 1200m. Using multilevel logistic regression, the association between destination intensity (classified in quintiles Q1(least)-Q5(most)) and likelihood of: 1) being sufficiently active (compared to insufficiently active); 2) walking≥4/week (at least 4 times per week, compared to walking less), was estimated in models that were adjusted for potential confounders. RESULTS: For all kernel distances, there was a significantly greater likelihood of walking≥4/week, among respondents living in areas of greatest destinations intensity compared to areas with least destination intensity: 400m (Q4 OR 1.41 95%CI 1.02-1.96; Q5 OR 1.49 95%CI 1.06-2.09), 800m (Q4 OR 1.55, 95%CI 1.09-2.21; Q5, OR 1.71, 95%CI 1.18-2.48) and 1200m (Q4, OR 1.7, 95%CI 1.18-2.45; Q5, OR 1.86 95%CI 1.28-2.71). There was also evidence of associations between destination intensity and sufficient physical activity, however these associations were markedly attenuated when walking was included in the models. CONCLUSIONS: This study, conducted within urban Melbourne, found that those who lived in areas of greater destination intensity walked more frequently, and showed higher odds of being sufficiently physically active-an effect that was largely explained by levels of walking. The results suggest that increasing the intensity of destinations in areas where they are more dispersed; and or planning neighborhoods with greater destination intensity, may increase residents' likelihood of being sufficiently active for health.

A child-centered scale of informal social control for Latino parents of preschool-age children: development and validation

Perceived neighborhood informal social control may determine whether parents allow their young children to be physically active in the neighborhood. We developed and validated a scale of neighborhood child-centered informal social control appropriate for Latino parents of preschool-age children. The scale was administered to 240 Latino parents, mainly mothers, recruited from neighborhoods cross-stratified by objectively measured crime and traffic safety. Participants completed measures of community cohesion, perceived signs of physical and social disorder, traffic safety and hazards, and perceived stranger danger. A subsample was reassessed 1 week later to determine test-retest reliability. Confirmatory factor analyses (CFAs) were conducted to examine the fit of the data to a priori measurement models. Construct validity was assessed by estimating the associations of the scale with the other measures. The scale showed good test-retest reliability, and factorial and construct validity. The scale needs to be cross-validated on other samples and Latino fathers.

Motivation and barriers for leisure-time physical activity in socioeconomically disadvantaged women

INTRODUCTION: The aim of this study was to examine cross-sectional and longitudinal associations between motivation and barriers for physical activity, and physical activity behavior in women living in socioeconomic disadvantage. This study also examined whether weight control intentions moderate those associations.

METHODS: Data from 1664 women aged 18-46 years was collected at baseline and three-year follow-up as part of the Resilience for Eating and Activity Despite Inequality study. In mail-based surveys, women reported sociodemographic and neighborhood environmental characteristics, intrinsic motivation, goals and perceived family barriers to be active, weight control intentions and leisure-time physical activity (assessed through the IPAQ-L). Linear regression models assessed the association of intrinsic motivation, goals and barriers with physical activity at baseline and follow-up, adjusting for environmental characteristics and also physical activity at baseline (for longitudinal analyses), and the moderating effects of weight control intentions were examined.

RESULTS: Intrinsic motivation and, to a lesser extent, appearance and relaxation goals for being physically active were consistently associated with leisure-time physical activity at baseline and follow-up. Perceived family barriers, health, fitness, weight and stress relief goals were associated with leisure-time physical activity only at baseline. Moderated regression analyses revealed that weight control intentions significantly moderated the association between weight goals and leisure-time physical activity at baseline (β = 0.538, 99% CI = 0.057, 0.990) and between intrinsic motivation and leisure-time physical activity at follow-up (β = 0.666, 99% CI = 0.188, 1.145). For women actively trying to control their weight, intrinsic motivation was significantly associated with leisure-time physical activity at follow-up (β = 0.184, 99% CI = 0.097, 0.313).

CONCLUSIONS: Results suggest that, especially in women trying to control their weight, intrinsic motivation plays an important role in sustaining physical activity participation over time. Also, weight goals for being physically active seem to play a role regarding short-term physical activity participation in this particular population. Addressing these motivational features may be important when promoting physical activity participation in women living in socioeconomically disadvantaged neighborhoods.

Translating osteoporosis prevention guidelines: a case study of participatory action and the development of an oversized jigsaw

OBJECTIVE: In Australia, the social gradient of chronic disease has never been as prominent as in current times, and the uptake of preventive health messages appears to be lower in discrete population groups. In efforts to re-frame health promotion from addressing behavior change to empowerment, we engaged community groups in disadvantaged neighborhoods to translate published preventive guidelines into easy-to-understand messages for the general population. METHOD: Our research team established partnerships with older aged community groups located in disadvantaged neighborhoods, determined by cross-referencing addresses with the Australian Bureau of Statistics, to translate guidelines regarding osteoporosis prevention. RESULTS: We developed an oversized jigsaw puzzle that we used to translate recommended osteoporosis prevention guidelines. DISCUSSION: Successful participatory partnerships between researchers, health promotion professionals, and community groups in disadvantaged neighborhoods build capacity in researchers to undertake future participatory processes; they also make the best use of expert knowledge held by specific communities.

Perceived neighborhood environmental attributes sssociated with walking and cycling for transport among adult residents of 17 cities in 12 countries: the IPEN study

INTRODUCTION: Prevalence of walking and cycling for transport is low and varies greatly across countries. Few studies have examined neighborhood perceptions related to walking and cycling for transport in different countries. Therefore, it is challenging to prioritize appropriate built-environment interventions. OBJECTIVES: The aim of this study was to examine the strength and shape of the relationship between adults' neighborhood perceptions and walking and cycling for transport across diverse environments. METHODS: As part of the International Physical activity and Environment Network (IPEN) adult project, self-reported data were taken from 13,745 adults (18-65 years) living in physically and socially diverse neighborhoods in 17 cities across 12 countries. Neighborhood perceptions were measured using the Neighborhood Environment Walkability Scale, and walking and cycling for transport were measured using the International Physical Activity Questionnaire-Long Form. Generalized additive mixed models were used to model walking or cycling for transport during the last seven days with neighborhood perceptions. Interactions by city were explored. RESULTS: Walking-for-transport outcomes were significantly associated with perceived residential density, land use mix-access, street connectivity, aesthetics, and safety. Any cycling for transport was significantly related to perceived land use mix-access, street connectivity, infrastructure, aesthetics, safety, and perceived distance to destinations. Between-city differences existed for some attributes in relation to walking or cycling for transport. CONCLUSIONS: Many perceived environmental attributes supported both cycling and walking; however, highly walkable environments may not support cycling for transport. People appear to walk for transport despite safety concerns. These findings can guide the implementation of global health strategies.