Sample selection and size
miscarriage
MISCARRIAGE, RECRUITMENT
Pregnant women were recruited from two primary health care clinics for the main DCHS study. Mothers were enrolled at 20 to 28 weeks' gestation while attending routine antenatal care and were prospectively followed. Women were eligible for the study if they were 18 years or older, between 20 and 28 weeks gestation, planned attendance at one of the two recruitment clinics, and intended to remain in the area. During a three-year period (March 2012 to March 2015), 1225 pregnant women were enrolled into the DCHS antenatally; 88 (7.2%) mothers were lost to follow up antenatally, had a miscarriage or a stillbirth. In total, 1137 women gave birth to 1143 live infants (4 twins and 1 triplet).For the present study, mother-infant dyads recruited by the DCHS were eligible for inclusion if the children were aged 41 to 43 months at the time of baseline assessment. An adult primary caregiver who cohabited with the child was a prerequisite. Twins and/or children with known neurodevelopmental delay or sensory impairment were excluded. A total of 122 eligible caregiver-child dyads were recruited from the relevant age group in the cohort; 61 dyads were randomized into the intervention group and 61 dyads into the waitlist control group, receiving care as usual.