Collected Dataset / ALSPAC_Children_77months

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. Questionnaires collected information about health and behaviour and how child gets along with other children from mother as well as self-image and activities from the child. Information was collected about physical health, mental and cognitive issues, diet and nutrition, environmental characteristics, childcare and schooling and activities. Information about accidents and injuries, medications, hearing, vision, speech, growth problems, other health problems, bed wetting/ bladder problems, teeth/dental problems, tics/twitches, diet and nutrition information including feeding difficulties and eating behaviours was collected as well as information about childcare and schooling information such as who, where and when children are cared for, school attendance, type of school, transport to school, school enjoyment, and information about activities such as tv viewing, toys/activities, outings, indoor/outdoor activities. Anthropometry measures were collected in a reported manner. Environmental exposures information such as passive smoke, contact with pets and hygiene was also collected.

Amongst mental and cognitive issues information about temper tantrums/rages and parent-child conflict 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.