Revista de Saúde Pública
On-line version ISSN 1518-8787Print version ISSN 0034-8910
YUNES, João and RONCHEZEL, Vera Shirley C.. A study on the lactation of women in the District of S. Paulo, Brazil. Rev. Saúde Pública [online]. 1975, vol.9, n.2, pp.191-213. ISSN 1518-8787. http://dx.doi.org/10.1590/S0034-89101975000200010.
A study on the existing Inter-relationship between lactation and fertility and their socio-economic variables was done on a sample of the S. Paulo district women. Breast feeding lasted according to the number of the births, age, level of education and family monthly expenses. A relationship between the feeding time and the interval between two subsequent pregnancies was also found in women who don't use birth control methods.
Keywords : Breast feeding; Lactation; Parity.