Breastfeeding decline in urban China: an exploratory study

"Retrospective data collected in two urban neighborhoods of Tianjin, People's Republic of China, reveal a decline in the rate and duration of breastfeeding since the mid-1930's.... The evidence indicates that breastfeeding declined as women became involved in work outside the home, as they adopted a form of postmarital residence that separated them from other relatives, as income increased, and as their rural origins decreased. No evidence was found to indicate a relationship between breastfeeding and parity or sex preferences."