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Table 4 Associations between parental pre-pregnancy BMI and newborn TL, stratified by paternal 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

Paternal age at delivery (years)

< 31(n = 496)

≥ 31(n = 586)

Percentage change (95% CI)

P-value

Percentage change (95% CI)

P-value

Maternal pre-pregnancy BMI

 NW

Ref

 

Ref

 

 UW

3.04(−3.17,9.40)

0.341

−3.62(− 10.05,3.28)

0.292

 OW

−18.53(−33.17, − 0.92)

0.041

− 6.46(−13.70,1.62)

0.119

Paternal pre-pregnancy BMI

 HW

Ref

 

Ref

 

 OW

−4.72(− 13.90,5.20)

0.337

6.66(−2.95,17.22)

0.184

Parents’ weight status combination*

 Both parents HW

Ref

 

Ref

 

 OW father, HW mother

−3.84(−13.30,6.66)

0.451

5.44(−4.50,16.41)

0.302

 OW mother, HW father

−19.83(−36.61,1.39)

0.064

−6.24(−13.90,1.86)

0.129

  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%)