ALSPAC - Mothers
The population consists of all pregnant women residents in the old administrative county of Avon, in the South West of England, with an expected date of delivery between 1 April 1991 and 31 December 1992.
The population consists of all pregnant women residents in the old administrative county of Avon, in the South West of England, with an expected date of delivery between 1 April 1991 and 31 December 1992.
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Sex
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Women
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Pregnant Women
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First trimester
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Second trimester
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Third trimester
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Newborns
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Twins
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Countries
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Territory
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Old administrative county of Avon, South West England.
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Ethnic Origin
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Health Status
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Sources of recruitment
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General population
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Specific population
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General Population
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Specific Population
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Supplementary Information
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ALSPAC attempted to make contact with eligible women through media information encouraging study contact and recruitment staff visiting community locations. In parallel, routine antenatal and maternity health services were used to promote the study and distribute an ‘expression of interest’ card. Through returning this card, women were able to request further information on the study or to decline participation. Completed cards contained sufficient detail to allow ALSPAC staff to determine eligibility.
Posters were printed for display in a variety of different places - including chemist
shops, libraries, mother and toddler groups, and pre-school playgroups, general
practitioner waiting-rooms, antenatal clinics and any other area where a mother in early
pregnancy was likely to be. In addition, there was considerable local and national
coverage in the press, radio and television.
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Number of Participants
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14,541
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Number of Participants with Biological Samples
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10,000
(No Limit)