Breast-feeding practice in Norway 1860–1984

Summary Data from birth records with information on previously born children from three maternity hospitals in Norway have been used to study the trend in breast-feeding practice from 1860 to 1984. During the whole period, the percentage of women breast-feeding for at least 1 week was remarkably high, above 90%. The results show a fairly stable duration of breast-feeding up until 1920, at least 3 months in approximately 80% of the women. After that year, the distribution of the duration of breast-feeding changed dramatically. The shortest durations were found in the late 1960s, when only about 30% lactated for 3 months or more. The duration then increased quickly, so that at the beginning of the 1980s about 80% of the women were again breast-feeding for at least 3 months. By multiple regression methods, the relationships of several independent variables to the duration of breast-feeding were investigated. Married women lactated for 1·5–3 months longer than unmarried, the difference being largest before 1920. First-born children were breast-fed for a little shorter time than second and later-born children. Until World War II women of lowest social strata had the longest durations of breast-feeding, and then the situation was reversed, women of highest social strata continuing the longest.