Table 1 Type and contents of questions in the self-administered questionnaire

Dichotomous

Parity, marital status, resident area, household register, knowledge about the breastfeeding recommendations, pregnancy and postnatal complications, baby gender, skin-to-skin contact within 10 minutes after birth, rooming-in, breastfeeding initiation within the first hour after birth, EBF during hospitalization, perception of insufficient breast milk, paid maternity leave, breastfeeding room at workplace

Multiple-choice

Breastfeeding practice from birth to six months (EBF^a, mixed feeding or no breastfeeding), educational level, employment status, monthly family incomes, mode of delivery,

Open-ended

Mother age, mother height, mother weight, birth weight, ethnic origin, gestational age, reasons for non EBF