Education (1) Prevention (1) Methods (1) Wealth (1) Proportion (1) Pregnancy, Unwanted (1) Parents (1) Matter (1) Households (1) Contraceptives (1) Contraception (1) Condoms (1) Cognition (1) Methods (1) Knowledge and learning (1) Age (1) Attitudes (1) Transmission (1) Sexual behavior (1) September (1) Districts (1) Sampling (1) Relations (1) Quality (1) Infancy (1) Health (1) Effectiveness (1) Toma de muestras (1) Salud (1) Preservativos (1)