Incidencia de malformaciones congénitas en 10 maternidades chilenas participantes en el ECLAMC: comparación de tres períodos 1971-1977, 1982-1988, 1989-1994 / Incidence of congenital malformations in 10 Chilean maternity hospitals: comparisson of 3 periods 1971-1977, 1982-1988, 1989-1994

ABSTRACT

During the study period, 133,564 newborns and 1,196 stillbirths from 8 Chilean maternity hospitals were examined. These results were compared with those of a similar survey performed in 1982-1988. the proportion of stillbirths in the study period was 0.88 percent. There were 3,268 malformed newborn (2.42 percent) and 125 malformed stillbirths (10.45 percent). These proportion of malformations among newborns were lower and among stillbirths were higher than those reported for the rest of Latin American countries. When comparting the results with the previous survey, a reduction in the proportion of malformations among newborns and stillbirths increased in this period. In the period 1969-1995, in one Chilean hospital, maternal ages and the proportion of congenital malformation showed parallel and rising curves. The survey shows some differences in the prevalence of congenital malformations, when the figures are compared with other Latin American countries and with previous surveys