Table 4 Odds ratios of BMI change at six weeks postpartum after the first pregnancy associated with GDM in the second pregnancy
| Â | Number of GDM in the second pregnancy | Unadjusted OR (95% CI) | Adjusted OR (95% CI)*# |
|---|---|---|---|
All women* | |||
 The weight retention at six weeks postpartum after the first pregnancy | |||
  Lost 1.0 or more | 3 | 1.61(0.44~5.94) | 1.53(0.41~5.63) |
  Remain stable (±1.0) | 27 | 1 | 1 |
  Gained 1.0–1.9 | 181 | 1.38(0.90~2.12) | 1.43(0.93~2.20) |
  Gained 2.0–2.9 | 260 | 0.94(0.62~1.43) | 1.00(0.66~1.53) |
  Gained 3.0 or more | 627 | 2.80(1.86~4.21) | 2.95(1.95~4.45) |
BMI in the first pregnancy < 25# | |||
BMI change at six weeks postpartum after the first pregnancy | |||
  Lost 1.0 or more | 2 | 2.21(0.43~11.40) | 2.29(0.44~11.78) |
  Remain stable (±1.0) | 20 | 1 | 1 |
  Gained 1.0–1.9 | 135 | 1.40(0.85~2.32) | 1.41(0.85~2.32) |
  Gained 2.0–2.9 | 205 | 0.98(0.60~1.60) | 0.99(0.61~1.62) |
  Gained 3.0 or more | 475 | 2.71(1.68~4.37) | 2.73(1.69~4.41) |
BMI in the first pregnancy ≥25# | |||
 BMI change at six weeks postpartum after the first pregnancy | |||
  Lost 1.0 or more | 1 | 1.13(0.12~10.37) | 1.12(0.12~10.36) |
  Remain stable (±1.0) | 7 | 1 | 1 |
  Gained 1.0–1.9 | 46 | 1.31(0.57~3.04) | 1.31(0.57~3.04) |
  Gained 2.0–2.9 | 55 | 0.81(0.35~1.85) | 0.81(0.35~1.86) |
  Gained 3.0 or more | 152 | 3.03(1.36~6.75) | 3.02(1.35~6.76) |