This cross-sectional study aimed to verify agreement between information given by mothers after delivery and data recorded on Pregnant Cards about antenatal care under the Brazilian Unified National Health System in the Metropolitan Region of Vitória, Espírito Santo State, Brazil. The study considered a population of 1,035 postpartum mothers interviewed in eight hospitals, where the cards were copied. The representativeness of the sample was guaranteedby stratification according to the proportion of births. Kappa and McNemar tests were carried out with the collected and processed information. Agreement levels regarding antenatal care were predominantly poor (kappa < 0.20). Mothers tend to: overestimate the number of antenatal visits (McNemar = 51.73; p-value = 0.001); affirm diseases during pregnancy, such as diabetes, anemia, hypertension and urinary infections; report the performance of laboratory tests; report the carrying out of clinical examinations. Results suggest the need to reflect on the type of data used for planning and implementing maternal and child public health polices, since data varies depending on the information source.
Prenatal Care; Health Evaluation; Bias (Epidemiology)
