Factors associated with preterm births in southeast Brazil: a comparison of two birth cohorts born 15 years apart.

摘要: An increase in preterm deliveries Ribeirao Preto stimulated an analysis of possible explanatory factors. Two cohorts singleton livebirths were studied, the first based on 6746 births 1978-9 and second 2846 1994. A logistic regression was carried out to assess association birth with several sociodemographic, behavioural clinical variables, including year survey. Delivery private settings compared a public setting, maternal age < or = 17 any other group, mothers who had previous abortions stillbirths associated greater rates birth. Although there regardless mode delivery, caesarean section group than vaginal delivery group. Over study period, hospitals operations increased markedly (from 4% 36% from 30% 51% respectively). Caesarean may be main contributor rate this study. It is essential ensure that health-care staff, especially those facilities, are properly educated audited.