Abstract Objective: To identify the prevalence of congenital anomaly in newborns of São Paulo. Method: Case Control Study. Data from Live Birth Declaration of São Paulo, from 2007 to 2011, were used. The sample consisted of 27 564 infants randomly selected in two groups, case and control. Descriptive statistics were applied to analyze the data. Results: The prevalence of congenital anomalies was 1.2% of live births. The average age of the mothers was 28.2 years in the group with congenital […]