Table 2.

Geometric means of mtDNA by selected variables, among controls

VariablesNumberMean (95% CI)P value
Age at sample collectiona (y)0.11
 45–502010.50 (0.48–0.54)
 51–603760.50 (0.46–0.52)
 61–702240.48 (0.44–0.50)
 71+730.48 (0.44–0.54)
Sexb<0.0001
 Men3790.46 (0.44–0.48)
 Women4950.52 (0.50–0.54)
BMI (kg/m2)0.78
 <201470.50 (0.48–0.54)
 20–<244840.48 (0.46–0.50)
 24–<282020.50 (0.46–0.54)
 28+410.48 (0.42–0.54)
Smoking statusc0.10
 Never6460.50 (0.48–0.52)
 Ever2280.46 (0.44–0.50)
 Alcohol drinkingc0.09
 Nondrinkers7040.50 (0.48–0.52)
 Drinkers1700.46 (0.44–0.50)
Diabetesc0.08
 No7910.50 (0.48–0.52)
 Yes830.46 (0.40–0.50)
Weekly physical activityc0.92
 No5650.48 (0.46–0.50)
 Yes3090.48 (0.46–0.52)
α-Carotene (mcg/d)c0.03
 1st quartile1920.46 (0.44–0.48)
 2nd quartile2170.48 (0.46–0.52)
 3rd quartile2270.50 (0.46–0.52)
 4th quartile2380.50 (0.48–0.54)
β-Carotene (mcg/d)c0.05
 1st quartile2020.46 (0.44–0.50)
 2nd quartile2070.48 (0.46–0.52)
 3rd quartile2170.52 (0.48–0.54)
 4th quartile2480.50 (0.46–0.52)
Lutein (mcg/d)c0.17
 1st quartile2010.46 (0.44–0.50)
 2nd quartile2140.50 (0.46–0.54)
 3rd quartile2300.50 (0.46–0.52)
 4th quartile2290.50 (0.46–0.52)
Green vegetable (g/d)c0.14
 1st quartile1990.46 (0.44–0.50)
 2nd quartile2120.48 (0.44–0.50)
 3rd quartile2410.52 (0.48–0.54)
 4th quartile2220.48 (0.46–0.52)
Cruciferous vegetable (g/d)c0.09
 1st quartile1910.46 (0.44–0.50)
 2nd quartile2250.48 (0.46–0.52)
 3rd quartile2390.50 (0.46–0.52)
 4th quartile2190.50 (0.46–0.54)
Yellow vegetable (g/d)c0.07
 1st quartile2080.48 (0.44–0.50)
 2nd quartile2120.48 (0.46–0.52)
 3rd quartile2210.48 (0.46–0.52)
 4th quartile2330.50 (0.48–0.54)
Total energy intake (kcal/d)c0.40
 1st quartile1900.48 (0.44–0.52)
 2nd quartile2290.48 (0.46–0.52)
 3rd quartile2310.50 (0.46–0.52)
 4th quartile2240.50 (0.46–0.52)
  • aAdjusted for sex and batch number.

  • bAdjusted for age and batch number.

  • cAdjusted for age, sex, and batch number.