Delayed antenatal care: does it effect pregnancy outcome?

Information on 13,127 mothers who were certain of the date of their last menstrual period (LMP) and who delivered in one week of April 1970, was analysed to assess whether delayed attendance for antenatal care (defined as not attending prior to 28 weeks of gestation) was associated with adverse outcome of pregnancy. Background factors that had been found to be predictive of delayed attendance were as follows: region of residence, region of birth of the child's father, marital status and contraceptive use in the 18 months prior to conception for primigravidae and the same four variables together with parity, maternal age and interpregnancy interval for multigravidae. Both before and after these factors had been taken into account, there was no evidence of any association between delay in attendance for care and severe pre-eclampsia, perinatal mortality, pre-term delivery and birthweight, although after adjustment for the background factors the length of gestation in delayed attenders was, on average, 2 days longer.