Fig. 2

Data collection per phase during the NuPED study. Prenatal data collection time points are at < 18 weeks’ gestation (phase 1); ±22 weeks’ gestation (phase 2); ±36 weeks’ gestation (phase 3) and at birth (phase 4). Postnatal data collection time points are at infant postnatal age of 6 weeks (phase 5); 24 weeks (phase 6); 6 weeks post measles immunisation (± 3 days) (phase 7) or 30 weeks (+ 30 days) if measles immunization was not given between 24 and 28 weeks; and 52 weeks (+ 30 days) (phase 8). wks, weeks; d, days, pp, postpartum