In the present paper, the authors presents a) - The results of a survey abouth the socio-economic and sanitary conditions of Tanquinho, dlstrict of Botucatu (São Paulo); b) - The results of the zero-to-fifteen population stool examinations and c) - The association between these two series of data. So founded, they endear the socio-economic condition role anã remind its importance in the planning and execution of medicai attention programs.