Learn More
Published evidence suggests that aspects of trial design lead to biased intervention effect estimates, but findings from different studies are inconsistent. This study combined data from 7 meta-epidemiologic studies and removed overlaps to derive a final data set of 234 unique meta-analyses containing 1973 trials. Outcome measures were classified as(More)
OBJECTIVE To examine whether the association of inadequate or unclear allocation concealment and lack of blinding with biased estimates of intervention effects varies with the nature of the intervention or outcome. DESIGN Combined analysis of data from three meta-epidemiological studies based on collections of meta-analyses. DATA SOURCES 146(More)
Drink drivers arrested in Tasmania are routinely asked by police where they had last been drinking, and these data were examined for 716 drivers arrested in Southern Tasmania during a 4-month period in 1992. Nearly half (43%) of arrested drink drivers cited individual hotels as the place where they had last been drinking. This enabled a citation score to be(More)
OBJECTIVE To assess lunchtime provision of food and drink in English primary schools and to assess both choices and consumption of food and drink by pupils having school lunches. These findings were compared with similar data collected in 2005. DESIGN Cross-sectional data collected between February and April 2009. In each school, food and drink provision,(More)
Collections of meta-analyses assembled in meta-epidemiological studies are used to study associations of trial characteristics with intervention effect estimates. However, methods and findings are not consistent across studies. To combine data from 10 meta-epidemiological studies into a single database, and derive a harmonized dataset without overlap(More)
BACKGROUND/OBJECTIVES In addition to the nutritional benefits of healthier school food, anecdotes describe improvements in children's behaviour and educational outcomes when school food or the school dining room environment is improved. This study hypothesized that a school food and dining room intervention would improve pupils' learning-related classroom(More)
BACKGROUND Greater time spent screen-viewing (SV) has been linked to adverse health outcomes. The aim of this study was to examine whether parental SV time is associated with child SV time on week and weekend days. METHODS Cross-sectional survey of 1078 children aged 5-6 and at least 1 parent. Child and parent SV was reported for weekday and weekend days.(More)
BACKGROUND A number of studies have suggested that there is a need to increase the physical activity levels of children. Parents are important influences on children's behaviour. There is a lack of information about whether there are associations between the physical activity levels of young children and their parents. The current study examined the(More)
RATIONALE Parenting is an often-studied correlate of children's physical activity, however there is little research examining the associations between parenting styles, practices and the physical activity of younger children. OBJECTIVE This study aimed to investigate whether physical activity-based parenting practices mediate the association between(More)
OBJECTIVES To compare food choices and nutrient intakes of pupils taking a school lunch or a packed lunch in eighty secondary schools in England, following the introduction of the food-based and nutrient-based standards for school food. DESIGN Cross-sectional data collected between October 2010 and April 2011. Pupils' lunchtime food choices were recorded(More)