Maelstrom Research Staging | MIREC_Mothers_Prenatal

MIREC_Mothers_Prenatal_Visit3

Networks -

Variables -

Associated study MIREC Contingency Table

Population

MIREC - Mothers

This population is composed of women aged 18 years and older and whom are less than 14 weeks pregnant, who were attending prenatal clinics.

Selection Criteria

Sex

Women

Minimum age

Pregnant Women

First trimester

Newborns

Twins

Countries

Canada

Territory

Vancouver, Edmonton, Winnipeg, Sudbury, Ottawa, Kingston, Hamilton, Toronto, Montreal and Halifax.

Ethnic Origin

Health Status

Participants were excluded if they:
- had known fetal abnormalities (e.g. hydatidiform mole), or known fetal chromosomal or major malformations in the current pregnancy; and
- had a history of medical complications, including the following: renal disease with altered renal function; epilepsy; any collagen disease, such as lupus erythematosus and scleroderma; active and chronic liver disease (hepatitis); heart disease; serious pulmonary disease; cancer; haematological disorder (patient with anaemia or thombophilias will be included); threatened spontaneous abortion (women with previous bleeding in the first trimester were included if the site documented a viable fetus at the time of recruitment); and illicit drug use.

Other Criteria

Participants had to have the ability to consent and to communicate in English or French, be willing to provide a sample of cord blood and be planning on delivering at a local hospital.

Recruitment

Sources of recruitment

Specific population

Specific Population

Clinic patients

Supplementary Information

Participants were recruited from the general population who were attending prenatal clinics (ultrasound, midwife and/or doctor's clinics) during the first trimester of pregnancy (6 to 14 weeks). Recruitment took place from 2008 to 2011.

Number of Participants

Number of Participants: 1,983
Number of Participants with Biological Samples: 1,983
Supplementary Information about selection criteria: Prenatal visit 1: 1983 participants
Prenatal visit 2: 1831 participants
Prenatal visit 3: 1733 participants
Delivery : 1727 participants
Postpartum visit 1 and 2 : 1385

More info

Data Collection Event

MIREC - Mothers - Prenatal Visit 3

Questionnaires were administered by trained research staff to collect demographic, life style (e.g. smoking and alcohol), use of medications, and potential sources of exposure data.

Blood pressure, weight and a proteinuria test were taken.

Urine and blood samples were collected. Under a separate consent form, additional biospecimens were collected to be stored in the MIREC Data and Biological Specimens Bank (MIREC Biobank).

More info

Collected Dataset / MIREC_Mothers_Prenatal_Visit3

MIREC_Mothers_Prenatal_Visit3

Population

MIREC - Mothers

Data Collection Event

MIREC - Mothers - Prenatal Visit 3

Files

Variables Classifications