The women were categorized based upon levels of self-reported alcohol consumption and changes in category membership between the antenatal and retrospective categories were also assessed. Comparison of categorical antenatal (“prospective”) report of maternal alcohol consumption, for both AAD and AADD, to categorical retrospective report found that antenatal report was significantly lower than retrospective report (AAD: χ2=39.95, df=6, p<0.001; see Table 4). Among the 288 women, 43 (14.9%) reported more average drinking retrospectively (AAD) than they had previously reported antenatally. Also, 7.0% of women who reported only light or no drinking antenatally reported “very heavy drinking” retrospectively. Only 4 women antenatally reported more than light drinking, and 3 of the 4 retrospectively reported even more drinking than in their antenatal report. Retrospective report of AAD identified 10.8 times more women as risk drinkers (operationalized as > one drink per day [AAD > 0.5]) than the antenatal report (Table 4).
