Of 462 eligible women approached, 400 (86.5%) consented to participate in the study. Individual characteristics of these participants are presented in Table 2.Approximately one-third of participants were aged between 25 and 29 years. Half of them were housewives and had completed secondary school. The majority were prevalence (55%) was considered in this study. In order
to estimate this prevalence with 95% confidence and a precision of 5%, a total of 380 pregnant women were needed.