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To establish the relationships between age, mode of conception and breastfeeding.

Consecutive cohorts of nulliparous women >25 weeks pregnant who had conceived through ART (ARTC) or spontaneously (SC) in three age groups ≤30, 31–36 and ≥37 years were recruited. Data were obtained via telephone interviews and postal questionnaires in late pregnancy and 4 months postpartum. Sociodemographic characteristics, reproductive health, birth and breastfeeding experiences were assessed by study‐specific questions. Self‐rated general health and symptoms of depression and anxiety were assessed with standardized psychometric instruments. Main outcomes were exclusive breastfeeding at discharge from maternity hospital and 4 months postpartum.

Of 1179 eligible women, 791 (67%) participated; 549 (93%) had singleton infants, provided complete data and were included in …