Risk of colorectal cancer associated with substantial coffee consumption

Study typeNo of studiesRelative risk (95% CI)1-1-151
All studies170.76 (0.66 to 8.9)
Cohort50.97 (0.73 to 1.29)1-1-152
Case control120.72 (0.61 to 0.84)
Study country No of studies Relative risk (CI) 1-1-151
Northern Europe50.65 (0.53 to 0.79)
Southern Europe50.72 (0.57 to 0.89)
US30.87 (0.59 to 1.29)1-1-152
Asia20.57 (0.44 to 0.75)
Special populations1-1-154 21.45 (0.93 to 2.26)1-1-152
  • 1-1-151 Relative risk was estimated by using odds ratios for case control studies and relative risks for cohort studies.

  • 1-1-152 Not significant.

  • 1-1-154 Seventh Day Adventists and Latter-day Saints.