THE EFFECT OF ANXIETY AND DEPRESSION DURING PREGNANCY ON OBSTETRIC COMPLICATIONS

Objective To investigate the effects of anxiety and depression during pregnancy on obstetric complications using the data collected from the St George's Birthweight Study Design Prospective population study. Se tting District general hospital in inner London. Subjects A consecutiv e series of 1860 white women booking for delivery were approached. Of these, 136 refused and 209 failed to complete the study for other reas ons, leaving a sample of 1515. Main outcome measure Data were obtained by research interviewers at booking, 17, 28, and 36 weeks gestation a nd from the structured antenatal and obstetric record. The predictor v ariables were the anxiety and depression scores measured using the Gen eral Health Questionnaire. The outcome variables were five obstetric c omplications: preterm delivery; nonspontaneous onset of labour; major analgesia in the first and second stages of labour; and nonspontaneous vaginal deliveries. The possible confounding effects of 35 socio-econ omic, psychological and personal variables were investigated using log istic regression. Results The factors that had the strongest relation with the outcomes were parity and maternal age. Depression during preg nancy was unrelated to the obstetric complications. Anxiety was weakly related to analgesia/anaesthesia in the second stage of labour (P = 0 .04). However, anxiety accounted for only 0.1% of the variance in use of major analgesia/anaesthesia. The most effective model. that for ana lgesia/anaesthesia in the first stage of labour, accounted for only 7. 3% of the variance. Conclusions In the general population of pregnant women, anxiety and depression during pregnancy, while undesirable in t hemselves, are of little importance in the evolution of obstetric comp lications.