Table 1

Baseline characteristics (mean ± SE or %) of participants by randomization group (n = 120)

Water (N = 42)Black tea (N = 43)Green tea (N = 35)P
Females (%)7472770.88
Non-Hispanic Caucasian (%)1712110.73
GSTM1 wild (%)4152710.03
GSTT1 wild (%)7977830.80
Age ≥50 yr (%)5051540.93
Education ≥12 yr (%)9591910.70
Body mass indexa ≥30 kg/m21430170.16
Percentage body fat36.6 ± 1.737.3 ± 1.636.7 ± 1.60.90
Calories (kcal/day)1642.5 ± 88.71636.2 ± 90.41788.6 ± 89.80.16
Cigarettes/day20.7 ± 1.319.8 ± 1.320.6 ± 1.80.96
Pack-years32.3 ± 3.433.8 ± 3.934.5 ± 4.80.97
Cotinine (ng/mg creatinine)2324.9 ± 215.11896.6 ± 180.72367.2 ± 308.60.47
Urinary 8-OHdG (ng/mg creatinine)8.7 ± 1.310.8 ± 1.39.5 ± 2.10.08
  • a 8-OHdG, 8-hydroxydeoxyguanosine.