Study design
We conducted a randomized controlled trial (RCT) to evaluate a dialogic book-sharing intervention for parents or caregivers of children aged 3.5 years. This RCT was retrospectively registered with the Pan African Clinical Trials Registry on 03/04/2022 (PACTR202204697674974). This RCT was nested in the Drakenstein Child Health Study (DCHS), an observational cohort study that recruited pregnant women and collected longitudinal data on an array of variables influencing maternal and child health outcomes [