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Table 4 IPC-BMI and index infant outcomes within maternal prepregnancy BMI strata at sibling pregnancy, Texas 2006–2012

From: Interpregnancy change in body mass index and infant outcomes in Texas: a population-based study

Outcome IPC-BMI Prepregnancy BMI at Sibling Pregnancy
Normal (18.5–24.9 kg/m2) Overweight (25.0–29.9 kg/m2) Obese (≥30.0 kg/m2)
Na aOR 95% CI Na aOR 95% CI Na aOR 95% CI
LGAb   96/1120    68/529    71/379   
  < 0 18/273 0.64 (0.35, 1.16) 16/189 0.42 (0.19, 0.92) 28/161 1.27 (0.59, 2.76)
  0 to < 1 36/354 1.00 (Reference) 16/105 1.00 (Reference) 11/77 1.00 (Reference)
  ≥1 42/493 0.86 (0.53, 1.39) 36/235 1.01 (0.52, 1.97) 32/141 2.13 (0.97, 4.68)
SGAc   92/1125    47/550    NR/413   
  < 0 31/260 2.04 (1.14, 3.64) 15/190 0.86 (0.36, 2.09) 17/172 2.20 (0.69, 6.97)
  0 to < 1 22/369 1.00 (Reference) 9/112 1.00 (Reference) NR/84 1.00 (Reference)
  ≥1 39/496 1.31 (0.76, 2.27) 23/248 0.99 (0.44, 2.27) 16/157 1.96 (0.61, 6.29)
PTBd   129/1091    52/545    50/401   
  < 0 41/250 1.87 (1.13, 3.07) 25/180 1.51 (0.69, 3.28) 26/163 0.96 (0.45, 2.06)
  0 to < 1 32/359 1.00 (Reference) 10/111 1.00 (Reference) 12/77 1.00 (Reference)
  ≥1 56/482 1.35 (0.85, 2.15) 17/254 0.71 (0.31, 1.61) 12/161 0.40 (0.16, 0.95)
  1. Abbreviations: aOR adjusted odds ratio, BMI body mass index (kg/m2), CI confidence interval, IPC-BMI interpregnancy change in body mass index (kg/m2), LGA large for gestational age, NR not reported due to small cell size and complementary suppression, PTB preterm birth, SGA small for gestational age
  2. aN, # affected / # unaffected
  3. bAdjusted for the following maternal variables: race/ethnicity, smoking, gestational weight gain, height, age, and education
  4. cAdjusted for the following maternal variables: race/ethnicity, smoking, gestational weight gain, and height
  5. dAdjusted for the following maternal variables: race/ethnicity, smoking, and gestational weight gain