Objective: To compare Johnson-Toshach’s method and ultrasonography in estimating fetal weight in term pregnant women. Design: Descriptive, comparative, prospective, longitudinal study. Institution: Hospital Regional de Cajamarca, Cajamarca, Peru. Participants: Term pregnant women. Methods: Uterine height was measured and fetal weight was estimated by Johnson-Toshach’s formula in 236 pregnant women 37-41 weeks. Subsequently, an obstetric ultrasound was performed in the same women to determine the fetal weight according Hadlock´s 2 formula. Delivery was expected within 48 hours; then the weight of the newborn was obtained. Statistical analysis was done using SPSS 19 statistical package, student t and McNemar tests with p<0.05 significance. Main outcome measures: Fetal weight. Results: Fetal weight estimated by Johnson-Toshach’s method was more accurate than that calculatedÂ...

Objective: To compare Johnson-Toshach’s method and ultrasonography in estimating fetal weight in term pregnant women. Design: Descriptive, comparative, prospective, longitudinal study. Institution: Hospital Regional de Cajamarca, Cajamarca, Peru. Participants: Term pregnant women. Methods: Uterine height was measured and fetal weight was estimated by Johnson-Toshach’s formula in 236 pregnant women 37-41 weeks. Subsequently, an obstetric ultrasound was performed in the same women to determine the fetal weight according Hadlock´s 2 formula. Delivery was expected within 48 hours; then the weight of the newborn was obtained. Statistical analysis was done using SPSS 19 statistical package, student t and McNemar tests with p<0.05 significance. Main outcome measures: Fetal weight. Results: Fetal weight estimated by Johnson-Toshach’s method was more accurate than that calculat...