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Table 5 Associations between parental pre-pregnancy BMI and newborn TL, stratified by maternal age at delivery

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

Subgroup Maternal age at delivery (years)
< 28(n = 978) ≥ 28(n = 104)
Percentage change (95% CI) P-value Percentage change (95% CI) P-value
Maternal pre-pregnancy BMI
 NW Ref   Ref  
 UW −1.37(− 7.10,4.71) 0.647 1.16(− 5.59,8.39) 0.725
 OW −3.17(− 20.93,18.58) 0.756 − 8.38(− 15.67, − 0.46) 0.038
Paternal pre-pregnancy BMI
 HW Ref   Ref  
 OW −1.37(− 11.08,9.40) 0.798 3.75(− 5.38,13.76) 0.434
Parents’ weight status combination*
 Both parents HW Ref   Ref  
 OW father, HW mother −0.23(− 10.46,11.17) 0.966 2.09(− 7.10,12.20) 0.675
 OW mother, HW father 2.33(−21.84,33.97) 0.866 −9.22(−16.63, − 1.37) 0.023
  1. Abbreviation: BMI Body mass index, TL Telomere length, UW Underweight, NW Normal weight, HW Normal and underweight, OW Overweight
  2. Models’ adjustments were according to model B in Table 2
  3. *Both parents OW was excluded for a small number 7(0.6%)