This indicates that there is also an unmet need for family planning; among the rest of the women, who had sought an induced abortion, 36 per cent of them had not used modern contraceptives. By methods, 49 per cent of the abortion seekers were using the traditional family planning methods in Viet Nam. It seems that the reason behind higher abortion rates, especially in rural areas, is the high desire for a smaller family size and the unavailability of methods with high effectiveness. Also a significant proportion of all ever-married women (36 per cent) could not report the correct fertile period in VNDHS 2002.