A, 22.3% to B, 7.6% to C, and 0.8% to D. The odds of having used risky medicines were higher among primigravidae in unit B (OR = 2.10;, in the 19 to 24-year age bracket (OR = 2.79;, and in the presence of a medical prescription (OR = 1.86;. Essential drugs were less used by women with higher family income (OR = 0.63; and those who had received private prenatal care (OR = 0.53;.