A group of 199 children, aging 1 month to 1 year, living in Parintins, Am, were submltted to a diahroea case-control study according to: age; occupational condition of the chief or the family; living accomodation; demograpkic composition; social interests of the family; child feeding; perceived. susceptibility; perceived seriousness; concepts of cause of diahroea. The non-association hypotheses between diarhoea and the independent variables were accepted, except age. It is doubted the actual value of the studied sample