Background The theory of human functioning and school organisation proposes that schools with rigid ‘boundaries’ (weaker relationships), for example, between staff and students, or learning and ...

It is becoming increasingly apparent that genetic factors are inadequate to fully explain many processes that shape development and disease. For example, monozygotic twin pairs, despite sharing ...

Background Hearing problems are among the top 10 most common burdens of disease and are projected to be become even more common by the year 2030. The aim of the present study was to give a current ...

Goldacre et al 1 use an impressively large database (28 616 cases and 325 456 controls) and an observed/expected ratio significantly below unity (0.83; 95% CI 0.74 to 0.93) in their record linkage ...

Dr Angela Spelsberg, Acting chief of the working group on health and member of the board of Transparency International, German Chapter, Tumorzentrum Aachen e.V., Wendlingweg 2, 52074 Aachen, Germany; ...

Dr Sander Greenland, Departments of Epidemiology and Statistics, University of California, Los Angeles, CA 90095-1772, USA; lesdomes{at}ucla.edu Biasing of studies towards results desired by the ...

Postal surveys are a cost effective method of obtaining information from large numbers of geographically disparate medical professionals about their attributes, behaviours, attitudes and beliefs. The ...

Background The influence of the sociodemographic context of one's environment on cognitive ageing is not well understood. Methods We examined differences in cognitive trajectories according to the ...

Objective This study investigated the association of residential density with overweight among adolescents in an urban area of China. Methods Using multistage proportional sampling methods, a ...

Background Several cross-sectional studies have demonstrated associations between diet quality, including fruit and vegetable consumption, and mental health. However, research examining these ...

OBJECTIVE Demographic studies in various industrialised countries have shown a decline in male births in the latter half of the 20th century from the expected ratio of 0.515 (males/total). This study ...

Objective: To test the hypothesis that maternal common mental disorders (CMD) are associated with poorer child nutritional status in four developing countries (Ethiopia, India, Vietnam, and Peru).