OBS Lifestyle Questionnaires

Women enrolled complete three lifestyle questionnaires (LSQ) using Research Electronic Data Capture (REDCap). The questionnaires are sent at 12-16 and 28-32 weeks gestation and 6-10 weeks postpartum. Some data collection fields are harmonized with the Better Outcomes Registry and Network (BORN).

The questionnaires are sent out at early pregnancy (12-16 weeks GA), late pregnancy (28-32 weeks GA), and early postpartum (6-10 weeks). A table of items collected within each Lifestyle Questionnaires can be found below.

OBS Diet History Questionnaire

The web-based Canadian Diet History Questionnaire II (DHQ) is a food frequency questionnaire that queries the participant’s diet over the past month, including information on portion sizes. The daily nutrient intake (including total calories, macronutrients, micronutrients, and intake from supplements) is derived using Diet*Calc software.

OBS Kids Data Collection Structure

OBS Kids follows up with mothers who participated in OBS, after delivery. A variety of questionnaires, administered at 8 months, 24 months, 36 months, and 4.5 years. These questionnaires are administered either via telephone interviews or home visits when permitted. The OBS Kids data collection structure can be found below: