AOF - Mothers
The population is composed of pregnant women of at least 18 years of age, with a gestational age of less than 25 weeks, and receiving prenatal care in Calgary.
The population is composed of pregnant women of at least 18 years of age, with a gestational age of less than 25 weeks, and receiving prenatal care in Calgary.
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Sex
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Women
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Minimum age
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18
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Pregnant Women
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First trimester
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Second 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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Calgary
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Ethnic Origin
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Health Status
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Other Criteria
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Women had to be less than 25 weeks pregnant at enrollment, and accessing prenatal care in Calgary in 2008 or 2009.
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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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Pregnant women were recruited from primary care offices, community posters and word of mouth, and through a city-wide single provider public health laboratory service.
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Number of Participants
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3,387
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Number of Participants with Biological Samples
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1,862
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Supplementary Information about selection criteria
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24 weeks gestation: 3363 participants
36 weeks gestation: 3184 participants
4 months postpartum: 3058 participants
1 year postpartum: 1574 participants
2 years postpartum: 1596 participants
3 years postpartum: 1994 participants
Flood: 1917 participants
5 years: 1992 participants
8 years: 2074 participants
COVID-19 questionnaire 1: 1333 participants
COVID-19 questionnaire 2: 1361 participants
COVID-19 questionnaire 3: 1280 participants
12-14 years postpartum: 1529 participants