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[Breast feeding and socioeconomic level of Chilean infants under 1 year of age].


 500 mothers of infants under 1 year old who were registered in 2 health service centers in Chile were interviewed between January and July 1982 as part of a collaborative study on breast feeding in Latin America conducted by the Latin American Association of Pediatrics. 5% of the infants were never breast fed, at 3 months approximately 50% were breastfed, and by 6 months only about 28% were breastfed. Classification of households according to ownership of automobiles and other household equipment, education of the household head, and household domestic help showed 6.0% in class A, the highest, 18.2% in class B, 40.4% in class C, 30.2% in class D and 5.2% in class E. 79.9% of infants in all social classes were breastfed at least in the 1st month, but the proportion was negatively related to class. 59.4% in class A were breastfed, compared to 69.1% in B, 84.8% in C, 82.6% in D, and 92.0% in E. Educational level and marital status of the mother were not related to breastfeeding practice. The relationship of employment outside the home could not be determined since 440 of the women were not in the labor force at the time of interview. 41.6% of mothers not breastfeeding cited lack of milk and 19.4% illness as the reason. 81.3% of mothers receiving prenatal care breastfed their babies compared to 52.4% who did not. 43.1% of the study children were aged 5 months or under. 79% of the mothers were aged 20-29 years. 33% discontinued breastfeeding because of declining milk supply, .48% for esthetic reasons, 3.3% for medical reasons, and 7.2% because of rejection by the infant. The introduction of other foods was cited by 24.3% as the reason for discontinuing breastfeeding.
