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Table 5 Quartiles of odds ratios1 of risk for rectal cancer for total daily ingestion (ug/day) from tap water of bromoform from tap water in Monroe County, New York State

From: Case control study of the geographic variability of exposure to disinfectant byproducts and risk for rectal cancer

Bromoform Quartile (ug/day) OR (95%CI) β pvalue
1 (Low) (0.90–0.64) ----- ----- -----
2 (0.65–0.97) 1.42 (0.73–2.74) 0.35 0.42
3 (0.98–1.68) 1.63 (0.85–2.69) 0.49 0.10
4 (High)(1.69–15.43) 2.32 (1.22–4.39) 0.84 0.01
  1. 1: abbreviations are as follows: OR, odds ratio; CI, confidence interval
  2. 2: exposure determined from consumption of tap water and estimated levels of bromoform (ug/l)
  3. 3: Results adjusted for covariates listed in Table 3
  4. 4: p-value for linear trend: 0.002