Figure 1.

Estimated fetal weight in male and female fetuses across gestation. There was no significant difference in estimated fetal weights of male and female fetuses. The relationship between fetal weight and gestation were derived using non-linear regression. N = 100 male and 61 female observations. Equations are: male estimated fetal weight = 868–120.7 (Gestational Age) + 4.86 (Gestational Age²) (R² = 0.93), female estimated fetal weight = 1143.96–135.22 (Gestational Age) + 4.98 (Gestational Age²) (R² = 0.95).