Table 2.

mtDNA copy number levels by selected characteristics

CharacteristicControls
nMean25%Median75%P
Smoking status
 Never2861.130.881.071.280.54
 Ever131.020.830.961.36
Alcohol use
 Never2931.120.881.061.280.23
 Ever61.410.951.381.53
BMI, kg/m2
 <251861.150.901.081.300.39
 ≥25 and <30971.080.841.041.23
 ≥ 30161.090.901.011.36
Regular moderate or vigorous physical activity
 ≤3 MET h/d971.120.861.051.270.58
 >3 MET h/d311.080.921.011.21
Family history of gastric cancer
 No2801.130.881.061.290.45
 Yes191.130.971.081.39
NSAID use, within past year
 No2921.120.881.061.290.27
 Yes71.231.051.161.30
Regular multiple vitamin use
 No2771.130.881.061.280.78
 Yes221.110.911.161.31
H. pylori positivea
 No181.100.761.041.280.28
 Yes2261.160.901.121.33
Age at baseline, y
 <50681.160.891.101.360.14
 50–60701.190.861.161.34
 >601611.080.871.021.23
Fruits/vegetables intake, g/d
 <Median1491.120.871.031.250.39
 ≥Median1501.130.891.081.31

NOTE: P value comparing mtDNA copy number between different levels of characteristic (ANOVA and Wilcoxon).

Abbreviation: MET, metabolic equivalent.

  • aH. pylori status available on 244 controls only.