Table 2.

Relation of gastric cancer risk factors to telomere length among controls

Demographic and risk factorsnRTL, mean (95% CI)*P
Age (tertile), y
    ≤611501.43 (1.37-1.48)
    62-691381.30 (1.24-1.35)
    ≥701281.28 (1.22-1.34)<0.001
Sex
    Male2691.32 (1.28-1.36)
    Female1471.38 (1.32-1.43)0.09
Body mass index (tertile), kg/m2
    ≤241381.36 (1.30-1.42)
    24-26.81401.33 (1.27-1.38)
    ≥26.81421.33 (1.27-1.38)0.40
Education level
    Low1541.30 (1.25-1.36)
    Medium1441.34 (1.28-1.39)
    High1181.39 (1.33-1.45)0.05
Family history of cancer
    No family history2751.32 (1.28-1.36)
    Stomach cancer171.25 (1.09-1.41)
    Other cancers1171.39 (1.33-1.45)
    Unknown71.52 (1.27-1.77)0.13
H. pylori status§
    Negative631.42 (1.34-1.51)
    Positive3521.32 (1.29-1.36)0.03
Smoking status
    Never1661.37 (1.32-1.43)
    Former1331.33 (1.27-1.39)
    Current1171.31 (1.25-1.37)0.14
Pack-years of smoking
    01661.38 (1.32-1.43)
    0.1-301371.36 (1.31-1.42)
    >301121.26 (1.20-1.33)0.02
Total years of drinking alcohol
    Nondrinker1361.36 (1.30-1.43)
    <101371.37 (1.31-1.43)
    10-29851.30 (1.23-1.38)
    >29561.26 (1.16-1.35)0.06
Fruit
    Daily/weekly2021.37 (1.32-1.41)
    Several times/month1371.34 (1.29-1.40)
    Rarely/never761.26 (1.19-1.34)0.04
Vegetables
    Daily/weekly2501.35 (1.31-1.39)
    Several times/month1221.33 (1.27-1.39)
    Rarely/never401.29 (1.18-1.39)0.30
  • *RTL means estimated from multivariable models adjusting for age, gender, smoking status, and pack-years of smoking using the post-estimation command adjust in Stata 10.0.

  • Only adjusted for sex, smoking status, and pack-years of smoking.

  • Only adjusted for age, smoking status, and pack-years of smoking.

  • §Negative, tested negative for both IgG antibodies to H. pylori and cagA; positive, tested positive for either IgG antibodies to H. pylori or cagA antibody or both.

  • Adjusted for each other.