Table 3.

Prevalence of colorectal endoscopy use by study participants (n = 561) by data source

Sigmoidoscopy
Colonoscopy
Endoscopy
Self report
Claim
Medical record
Self report
Claim
Medical record
Self report
Claim
Medical record
n = 128n = 121n = 85n = 216n = 197n = 191n = 281n = 252n = 237
All study participants22.821.615.238.535.134.150.144.942.3
Age50-64 y25.413.68.539.033.930.550.835.632.2
65-74 y23.922.215.440.233.633.052.443.940.7
75-80 y19.323.317.334.038.738.044.050.750.0*
RaceAfrican American28.818.213.628.034.133.340.941.742.4
White21.022.615.641.7*35.434.352.9*45.942.2
SexFemale23.719.616.735.732.533.046.843.642.7
Male21.524.712.842.939.335.655.347.041.6
EducationLess than high school20.213.89.622.335.133.028.739.438.3
High school24.022.414.834.734.734.246.945.941.8
High school plus23.524.217.446.6*34.833.759.8*45.843.6
Marital statusMarried24.922.115.441.937.734.655.046.442.7
Divorced, separated, single14.521.814.534.532.732.740.043.640.0
Widowed20.820.114.631.929.933.342.4*41.741.7
Low incomeNo State “buy in”23.021.715.039.435.634.351.145.442.6
State “buy in”19.019.019.014.3*23.828.623.8*33.333.3
RegionEastern North Carolina19.327.713.345.834.934.950.644.644.6
Central North Carolina18.917.110.735.434.131.746.041.837.2
Western North Carolina33.3*28.0*26.0*41.337.338.758.7*52.052.0*
  • NOTE: Colorectal endoscopy includes sigmoidoscopy and colonoscopy procedures.

  • * χ2 test significant at P < 0.05 for difference in test use rates by demographic characteristic within the data source.