Table 4

Univariate analysis of the factors that affect urinary 8-OHdG concentrations

Variablesn8-OHdG 
 (nmol)p value8-OHdG 
 (pmol/kg)p value
*Mean±SD.
†Low urinary Cr: <1.13 μg/g cre. Moderate urinary Cr: 1.13–6.41 μg/g cre. High urinary Cr: >6.41 μg/g cre.
Group0.00980.0253
    Cr worker4873.2±62.8*1149.5±759.5
    Control1944.6±25.8730.2±377.6
Gender0.01600.0451
    Male4277.7±62.11166.7±716.7
    Female2543.9±36.8816.6±600.0
Age (y)0.16730.2257
    <271693.5±93.4966.6±549.9
    27–403451.5±31.2849.9±500.1
    >401765.5±40.31083.3±650.1
BMI0.01020.1808
    <275858.3±36.1983.4±583.2
    ⩾279109.2±119.41316.7±1216.8
Smoking0.01820.0129
    Yes2486.6±73.61316.7±816.6
    No4353.1±39.8866.7±566.7
Alcohol consumption0.06130.1035
    Usually6131.5±132.01800.0±1283.4
    Sometimes2555.7±28.2900.0±500.1
    Seldom/never3660.6±45.6983.4±633.3
Betel nut consumption0.00040.0039
    Usually6141.9±130.31816.8±1283.4
    Sometimes370.5±35.91066.8±583.2
    Seldom/never5856.9±37.8950.1±582.9
Common cold0.06820.1909
    Yes799.7±131.91266.6±1316.7
    No3954.3±36.1900.0±516.6
Urinary Cr concentration†0.04760.0795
    Low2655.0±25.8900.0±466.8
    Moderate2759.2±41.6999.9±633.3
    High1495.1±100.21333.2±1066.8