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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: Clin Gastroenterol Hepatol. 2015 Feb 28;13(8):1487–1495. doi: 10.1016/j.cgh.2015.02.038

TABLE 1.

Characteristics of the study population.

Variable Weighted sample (N = 870,214) Weighted % *, Standard error * Unweighted sample (N = 2,539)

CRC screening modality:
 Colonoscopy 521600 60.0 2.2 1623
 Sigmoidoscopy only 21649 2.5 0.5 53
 Fecal-based test only § 54622 6.3 0.7 170
 Sigmoidoscopy and fecal-based test § 15819 1.8 0.3 53
 None within past 5 years 256524 29.5 2.1 640

Physician recommended CRC screening:
 No 324046 37.2 2.1 866
 Yes 546168 62.8 2.1 1673

Race/ethnicity:
 White 605958 69.6 2.0 2060
 African American 52911 6.1 0.9 107
 Latino 86990 10.0 1.9 110
 Asian 72720 8.4 1.1 142
 Other 51635 5.9 0.8 120

Age:
 ≥ 50 years old 676019 77.7 2.2 2236
 < 50 years old 194195 22.3 2.2 303

Sex:
 Female 508519 58.4 2.1 1632
 Male 361695 41.6 2.1 907

Marital Status:
 Unmarried 284798 32.7 2.1 1073
 Married 585416 67.3 2.1 1466

Years lived in the U.S.:
 Born in the U.S. 691116 79.4 2.5 2210
 < 1 – 14 14447 1.7 0.4 33
 ≥ 15 164651 18.9 2.5 296

English proficiency:
 Not at all or not well 57546 6.6 1.9 68
 Only or very well or well 812668 93.4 1.9 2471

Self-reported health status:
 Poor or fair 184364 21.2 2.5 436
 Good or very good 528826 60.8 2.3 1575
 Excellent 157024 18.0 1.1 528

Household size - 2.5 (mean) 0.1 2.0 (mean)

Work status:
 Not working 409248 47.0 1.8 1332
 Currently working 460966 53.0 1.8 1207

Education level:
 Did not graduate from high school 71601 8.2 1.3 129
 High school degree 374370 43.0 2.0 1011
 College degree 276811 31.8 2.2 870
 Graduate degree 147432 16.9 1.1 529

Federal poverty level (FPL):
 ≥ 300% FPL 561384 64.5 2.2 1701
 200 – 299% FPL 119731 13.8 1.6 350
 100 – 199% FPL 128656 14.8 2.2 331
 0 – 99% FPL 60443 6.9 0.9 157

Insurance status:
 No insurance 94468 10.9 2.6 143
 Has insurance 775746 89.1 2.6 2396

Usual source of care (USOC):
 No USOC 49664 5.7 0.8 138
 Has USOC 820550 94.3 0.8 2401

CRC, colorectal cancer; U.S., United States.

*

Data are presented as percent unless otherwise indicated.

Columns may not add up to 100% due to rounding.

Performed within past 5 years.

§

Performed within past year.