Fetal growth as part of the evaluation of well-being allows one to recognize and prevent one of the most frequent causes of fetal death, intrauterine growth restriction. Some variables such as weight and maternal size, parity, gender of the fetus and ethnicity have shown influence on the outcome of the term fetal weight. We sought to estimate the characteristics that predict term fetal weight in a cohort of women from the Colombian population. Methods: Analytical study of a cohort, prospective, dynamic, multicenter. He gathered 3,000 patients from Bogota in three hospitals (Magdalena Clinic, San Rafael University Hospital and Mayor University Hospital - Mederi), with pregnancies between 24 and 40 weeks. Data were collected from the clinical records of institutional delivery rooms. Sociodemographic, clinical - obstetric and background variables of the mother, related to the GROW model, were collected. It was analyzed with absolute and relative frequencies, and summary of quantitative variables; the associations were established by correlations and U Mann Whitney test; Multiple linear regression analysis was performed to adjust the coefficients. The protocol was approved by the ethics committee of the institutions. Results: the majority of patients came from the urban area, with similar proportions of male and female newborns. The median age of the mothers was 27 years. The most prevalent comorbidity was hypothyroidism followed by preeclamsia. The average fetal weight was 3,259 grams. There was a significant correlation of weight with number of gestations, initial weight of the mother and height and association sex of the newborn and arterial hypertension. The multivariate model showed as predictors of the newborn's weight, the mother's initial weight, the sex of the newborn and the mother's size. Discussion: The variables proposed in the literature with impact on term fetal weight and contemplated in the predictive model of term fetal weight proposed by Gardosi et al., Were corroborated in the present study, confirming their impact on fetal growth.
