Table 4

ORs and 95% CIs for the association between colon cancer and cumulative exposure to CIs THMs by tap water consumption, among malesa

Tap water consumptionTHM-years (μg/liter-yr)
<478478–15021503–1946>1946
<1.5 liter/day1.001.13 (0.58–2.21)1.30 (0.66–2.56)2.14 (1.13–4.07)
1.5–2.051.43 (0.76–2.69)1.78 (0.91–3.46)0.98 (0.49–1.93)1.45 (0.76–2.74)
>2.051.12 (0.58–2.18)1.71 (0.90–3.24)1.51 (0.80–2.87)2.42 (1.28–4.56)
  • a ORs (95% CI) adjusted for age; education; body mass index; and intake of energy, cholesterol, calcium, alcohol, and coffee.