Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, use or have used contraceptions number of live births medical advice for use of contraceptions. Unidades: relative figures ;Total;Does not visit a medical center;Visits a public center;Visits a private center; Total;100;48,63;33,74;17,63; None;100;59,61;25,62;14,78; One;100;43,29;36,79;19,92; Two;100;42,67;37,73;19,6; Three;100;46,33;37,11;16,56; Four;100;39,85;41,77;18,38; Five and more;100;45,03;44,41;10,56; Notas: Fuente: National Statistics Institute