Factors affecting the duration of gestation among women taking prenatal care at Gondar referral hospital, Ethiopia

BACKGROUND: Pregnant women taking prenatal care is vital for the health of the mother and the fetus. The duration of pregnancies provides a useful measure of a woman's natural length of pregnancy and may help in predicting an individual woman's due date. The objective of this study was to understand the factors affecting the duration of gestation among women taking prenatal care in Gondar referral hospital, Ethiopia. METHODS: A quantitative research design using secondary data available in the form of antenatal care (ANC) cards in the Gondar teaching referral hospital data set. Kaplan–Meier estimate was used to explain the median survival time of duration of gestation. A multivariate AFT model was performed to identify the factors related to the duration of gestation among women. RESULTS: The mean time of the length of pregnancy was 39.5 weeks. The factors such as, the age of women, number of children, number of doctor consultations, and the stage of gestation were found to be statistically significant (p < 0.05) for the survival time of time to birth of pregnant women in Ethiopia. Weibull AFT model was found to be the best model for predicting the time to birth of pregnant women in Ethiopia. CONCLUSION: We did not see associations between length of gestation and blood pressure and bleeding during early pregnancy. We also did not find an association with the presence of disease, which has been associated with the length of pregnancy. The frequency of visiting a doctor during the gestation period enhances the length of the gestation period. The shorter gestation period from the due date is dangerous to the health of both mother and her fetus.