Primary and secondary outcome measures: Main
exposure variable —type of infant feeding in hospital
up to time of study recruitment (24–48 h postpartum),
categorised as ‘fed directly at the breast only’ or
‘received at least some expressed breast milk (EBM) or
infant formula’. Primary outcome—proportion of
infants receiving any breast milk feeding at 6 months
postpartum. Secondary outcomes—proportion of
infants receiving only breast milk feeding at 6 months;
breast milk feeding duration; and maternal
characteristics associated with giving any breast milk at
6 months.