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Table 2 Comparison of GWG IQR with IOM recommendations

From: Association between gestational weight change trajectories and perinatal outcomes in twin pregnancies in China

BMI Category

IQR

IOM recommendations

Underweight (BMI < 18.5 kg/m2)

16.4–24.1

ND

Normal weight (BMI 18.5–24 kg/m2)

14.5–22.0

17–25

Overweight (BMI 24–28 kg/m2)

10.0-19.3

14–23

Obese (BMI ≥ 28 kg/m2)

ND

11–19

  1. Abbreviations: BMI, body mass index; GWG, gestational weight gain; IQR, Interquartile range; IOM, US Institute of Medicine; ND: not determined