Breast-feeding in Geneva: prevalence, duration and determinants.

A telephone survey was carried out with the objective of measuring the prevalence, duration and determinants of breast-feeding in the canton of Geneva, between August and December 1993. The participants were 278 out of 320 families with a telephone number in Geneva, from a random sample of families in which a child had been born in Geneva in the preceding 15 months. Prevalence of breast-feeding at 1 day of life was 93.3%, at 3 months 62.5%, at 4 months 51.1%, at 6 months 28.1%; median duration was 4.2 months. For complete (exclusive or predominant) breast-feeding, results were: 1 day 87.3%, 3 months 37.5%, 4 months 19.4%, 6 months 3.8%; median duration 2.4 months. Initial prevalence of breast-feeding was significantly higher in girls (97.2%) than in boys (89.4%, p < 0.01). Duration of breast-feeding was shorter in children of women who smoked (p < 0.001). Relative risks for no breast-feeding at 4 months were 1.53 (95% confidence limits 1.20-1.96) for less than 15 cigarettes per day during pregnancy, and 3.65 (2.19-6.09) for 15 cigarettes or more. Duration of breast-feeding was shorter if the mother worked as an employee. Prevalence and duration were higher if the mother was originally from Africa, Asia, Middle-East or Latin American countries. Although the initial prevalence of breast-feeding was relatively high, only half of children were breast-fed at 4 months. Promotive efforts are needed to increase the duration of breast-feeding, in particular by legislation on maternal protection. Further studies are required to clarify gender differences in breast-feeding.