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Table 6 Sensitivity analyses

From: Maternal overweight but not paternal overweight before pregnancy is associated with shorter newborn telomere length: evidence from Guangxi Zhuang birth cohort in China

  N Percentage change (95% CI) P-value
Maternal BMI
 Model B
  NW 753 Ref  
  UW 255 0.23(−4.28,4.95) 0.929
  OW 74 −7.96(− 14.69, − 0.69) 0.032
 Excluding drinking before pregnancy
  NW 733 Ref
  UW 248 0.93(− 3.62,5.68) 0.678
  OW 74 −7.74(−14.49, − 0.69) 0.034
 Excluding passive smoking during pregnancy
  NW 294 Ref
  UW 97 −3.84(− 10.67,3.28) 0.285
  OW 30 −14.30(− 23.62, − 3.62) 0.010
 Excluding pregnancy comorbidities or complications
  NW 659 Ref
  UW 231 0.00(−4.72,4.71) 0.966
  OW 60 −10.05(−17.21, −2.28) 0.013
 Excluding preterm birth and low birth weight
  NW 709 Ref
  UW 231 0.46(−4.06,5.20) 0.836
  OW 72 −7.96(−14.69, −0.69) 0.033
 Excluding women from urban areas
  NW 704 Ref  
  UW 241 0.69(−3.84,5.44) 0.793
  OW 68 −10.05(−16.82, −2.95) 0.007
Paternal BMI
 Model B
  HW 995 Ref
  OW 87 0.93(−5.59,8.14) 0.772
 Excluding drinking before pregnancy
  HW 972 Ref
  OW 83 −0.23(−6.89,6.91) 0.960
 Excluding passive smoking during pregnancy
  HW 396 Ref
  OW 25 −4.50(−15.67,8.14) 0.474
 Excluding pregnancy comorbidities or complications
  HW 875 Ref
  OW 75 0.93(−6.24,8.64) 0.793
 Excluding preterm birth and low birth weight
  HW 930 Ref
  OW 82 1.39(−5.38,8.89) 0.683
 Excluding women from urban areas
  HW 932 Ref  
  OW 81 2.57(−4.28,9.90) 0.479
Parents’ weight status combination*
 Model B
  Both parents HW 928 Ref
  OW father, HW mother 80 0.69(−6.24,8.14) 0.866
  OW mother, HW father 67 −8.38(−15.47, −0.92) 0.028
 Excluding drinking before pregnancy
  Both parents HW 905 Ref
  OW father, HW mother 76 −0.69(−7.53,6.91) 0.860
  OW mother, HW father 67 −8.59(−15.47, −1.14) 0.026
 Excluding passive smoking during pregnancy
  Both parents HW 368 Ref
  OW father, HW mother 23 −3.62(−15.28,9.65) 0.582
  OW mother, HW father 28 −13.30(−23.09, −2.28) 0.021
 Excluding pregnancy comorbidities or complications
  Both parents HW 820 Ref
  OW father, HW mother 70 1.16(−6.24,9.14) 0.784
  OW mother, HW father 55 −10.05(−17.40, − 1.83) 0.018
 Excluding preterm birth and low birth weight
  Both parents HW 865 Ref
  OW father, HW mother 75 1.16(−6.03,8.64) 0.774
  OW mother, HW father 65 −8.59(−15.67, −0.92) 0.027
 Excluding women from urban areas
  Both parents HW 871 Ref  
  OW father, HW mother 74 2.09(−4.94,9.65) 0.575
  OW mother, HW father 61 −10.87(−17.78, −3.39) 0.005
  1. Abbreviation: BMI Body mass index, TL Telomere length, UW Underweight, NW Normal weight, HW Healthy weight (normal and underweight), OW Overweight
  2. Models’ adjustments were according to model B in Table 2
  3. Preterm birth was defined as a newborn with gestational age < 37 weeks, low birth weight was defined as a newborn with birth weight < 2500 g
  4. *Both parents OW was excluded for a small number 7(0.6%)