Collected Dataset / ALSPAC_Children_57months

The population consists of any resulting child from all pregnant women residents in the old administrative county of Avon if their estimated delivery date fell between 1 April 1991 and 31 December 1992.

Information was collected through the use of questionnaires, and registries.

Some questions were child based and some were child completed. Questionnaire specifically collected information about health and behaviour and how child gets along with other children. In addition, information was collected about physical health, mental and cognitive issues, parenting, childcare and schooling, and activities. Information about current health and symptoms, seen doctor, hospital admissions, surgical procedures, allergies, eczema and asthma, diarrhea or gastrointestinal problems, convulsions or seizures, infections, and sleeping was collected. Parenting, childcare and schooling information such as who, where and when children are cared for, school attendance, transport to school, and school enjoyment and information about activities such as tv viewing, toys/activities and activities with adults was also collected.

Amongst mental and cognitive issues information about development, parental concerns over development, temperament, language/vocabulary, gender behaviour, social development, and life events was collected.

Children have been linked to the Clinical Practice Research Datalink (CPRD) database, Pupil Level Annual School Census (PLASC), Annual School Census (ASC) and National and the Pupil Database (NPD).

Participants were linked to residential addresses across the life course. Linkages could be established to co-ordinates or health, political and administrative geographies. Participants could also be linked to neighbourhood data.