Sample
intellectual impairment, psychiatric
BLIND
All pregnant women over the age of 14 years, presenting to any of the 8 study clinics for antenatal care from June 2017 to September 2018, were invited to participate in the study and signed voluntary informed consent. Mothers’ consent was to participate in a study of maternal and child well-being, and mothers were blind to the supervision status of the CHWs routinely assigned to all pregnant and new mothers. Data collection at follow-up interviews continued until February 2021. COVID-19 led to a break in field operations with no in-home data collection from March to October 2020. During this period, telephone interviews were allowed from July to October 2020. Telephone interviews did not allow anthropomorphic measures to be gathered for 89/1,369 (6.5%) mothers or children on their follow-up interviews.Pregnant women under the age of 18 years provided both youth assent and parent/guardian consent. Women with intellectual impairment or who demonstrated significant psychiatric problems at initial contact were excluded based on the interviewer’s evaluation. Data collectors reviewed all clinic and hospital antenatal and birth records to identify pregnant women and ensure that a consecutive series of 900 pregnant women were recruited; 27/900 women were then found ineligible (underage, not pregnant, recruited twice), resulting in 873 pregnant women. Twins/triplets were excluded because the developmental trajectories of these children have been found to be quite different in previous studies [