Background Mental disorders often have onset early in life, contribute substantially to the
global disease burden, and may interfere with young people's ability to complete age …

Background Attrition is one of the major methodological problems in longitudinal studies. It
can deteriorate generalizability of findings if participants who stay in a study differ from those …

Purpose To estimate the prevalence of stress, anxiety, depression, and resilience amongst
Canadian farmers. Methods An online cross-sectional survey using validated psychometric …

Response to survey questionnaires is vital for social and behavioural research, and most
analyses assume full and accurate response by participants. However, nonresponse is …

BackgroundAn increase in reported psychological distress, particularly among adolescent
girls, is observed across a range of countries. Whether a similar trend exists among students …

Objective We aimed to investigate the 10-year trend in the prevalence of insomnia
symptoms, insomnia cases, and use of hypnotic agents in the adult Norwegian population …

Background Children with low-income parents have a higher risk of mental disorders,
although it is unclear whether other parental characteristics or genetic confounding explain …

The availability of detailed, harmonised and high‐quality food consumption data for use in
dietary exposure assessments is a long‐term objective of EFSA. In 2009, the EFSA …

Purpose To identify variables associated with common mental disorders in an Australian
university population. Methods We invited all Australia-based students from a large public …

Background Non-response is a major concern among substance use epidemiologists. When
differences exist between respondents and non-respondents, survey estimates may be …