Subgroup Sample size Age (years old) BMI(kg/m²) Gestational age(w) Neonatal Weight(kg)
A 674 29.75±3.08 20.65±2.49 38.94±1.04 3251.59±318.23
B 806 29.92±2.90 20.91±2.58 39.06±1.06 3291.07±320.92
C 341 29.99±3.10 20.74±2.78 38.87±1.61 3256.23±398.10
D 278 30.35±3.13 20.81±2.36 38.83±1.01 3287.45±346.70
H 6.380 6.066 5.065 7.727
P 0.095 0.108 0.167 0.052