Table 1.

U.S. prevalence of colorectal cancer risk factors in adults aged 20 to 69 years overall, and by sex, race/ethnicity, and age, NHANES 2007 to 2008a

Sex % (SE)Race/ethnicity % (SE)Age (y) % (SE)
Risk factorbOverall%(SE; n = 3,438)Male (n = 1733)Female (n = 1,705)PNHW (n = 1,758)NHB (n = 897)MA (n = 783)P20–34 (n = 944)35–49 (n = 1,087)50–69 (n = 1,407)P
Cigarette smoking
 Ever48.97 (2.06)55.75 (2.30)42.73 (2.31)<0.0151.10 (2.32)44.32 (2.22)38.29 (2.73)<0.0146.02 (3.80)46.06 (2.62)55.28 (1.76)0.03
 Current26.19 (1.91)29.20 (1.97)23.42 (2.13)<0.0126.11 (2.34)31.92 (2.51)19.37 (2.52)0.0833.81 (2.81)26.84 (2.89)19.17 (1.51)<0.01
Obesity35.61 (1.11)33.92 (1.29)36.25 (1.52)<0.0133.54 (1.53)44.56 (2.39)40.32 (3.09)0.0128.91 (2.27)36.16 (1.74)40.70 (2.92)<0.01
Physical inactivity33.60 (1.78)26.75 (1.54)39.92 (2.07)<0.0131.38 (2.28)45.20 (3.35)36.02 (3.73)0.0225.50 (2.43)34.72 (2.21)39.31 (3.06)<0.01
Intake
 Red meat30.67 (1.39)36.02 (2.16)25.75 (1.49)<0.0131.25 (1.74)27.87 (2.14)29.79 (1.80)0.6034.65 (1.72)29.05 (2.53)28.92 (1.73)0.01
 Processed meat14.33 (1.91)18.69 (1.14)10.31 (1.09)<0.0114.11 (1.01)18.10 (1.60)11.15 (1.34)0.0815.77 (1.15)14.60 (1.86)12.86 (1.57)0.47
 Alcohol8.47 (1.18)12.52 (1.40)4.73 (1.39)<0.019.28 (1.31)6.95 (1.21)4.06 (0.98)0.017.25 (1.20)8.70 (1.08)9.27 (1.95)0.37
  • aWeighted. Differences between groups evaluated using the χ2 test.

  • bEver smoking: >100 lifetime cigarettes smoked; Current smoking: cigarettes smoked on “most” or “some” days; Obesity: ≥30 kg/m2; Physical inactivity: <150 minutes of moderate or <75 minutes of vigorous activity each week; Red meat intake: ≥2 oz total red meat intake in 24-hour recall; Processed meat intake: ≥2 oz total processed meat intake in 24-hour recall; Alcohol intake: ≥2 drinks on most days.