Table 2.
Baseline characteristics of analyzed participants by randomization group, Group Health, Washington State 2010-2012
| OC-Auto® N = 739 | InSure® N = 741 | Hemoccult SENSA® N = 754 | |
|---|---|---|---|
| Mean age, years (SD) | 59 (6) | 59 (6) | 58 (6) |
| 50–64 years, No. (%) | 605 (81.9) | 613 (82.7) | 619 (82.1) |
| ≥65 years, No. (%) | 134 (18.1) | 128 (17.3) | 135 (17.9) |
| Female, No. (%) | 424 (57.4) | 438 (59.1) | 433 (57.4) |
| Race/Ethnicity, No. (%)a | |||
| Hispanic | 21 (2.9) | 24 (3.3) | 20 (2.7) |
| Non-Hispanic | |||
| Black | 22 (3.1) | 18 (2.5) | 17 (2.3) |
| Asian/Pacific Islander | 38 (5.3) | 45 (6.2) | 62 (8.4) |
| Other | 33 (4.6) | 29 (4.0) | 31 (4.2) |
| White | 603 (84.1) | 605 (83.9) | 606 (82.3) |
| (Missing) | 22 | 20 | 18 |
| Education, No. (%) | |||
| High school graduate, GED or less | 120 (16.3) | 115 (15.7) | 95 (12.7) |
| Some college, no degree | 245 (33.3) | 259 (35.3) | 280 (37.4) |
| Bachelor's degree or higher | 371 (50.4) | 359 (49) | 373 (49.9) |
| (Missing) | 3 | 8 | 6 |
| Marital status, No. (%) | |||
| Not married or living with partner | 172 (24.7) | 174 (25.1) | 180 (25.4) |
| Married or living with partner | 524 (75.3) | 520 (74.9) | 529 (74.6) |
| (Missing) | 43 | 47 | 45 |
| Employment status, No. (%) | |||
| Full or part time | 518 (70.7) | 505 (68.9) | 532 (71.0) |
| Retired | 159 (21.7) | 165 (22.5) | 164 (21.9) |
| Other | 56 (7.6) | 63 (8.6) | 53 (7.1) |
| (Missing) | 6 | 8 | 5 |
| Importance of CRC screening in the next 6 months, No. (%) | |||
| Very | 125 (17.2) | 122 (16.8) | 140 (18.9) |
| Somewhat | 321 (44.2) | 314 (43.2) | 321 (43.3) |
| Not very | 212 (29.2) | 203 (27.9) | 216 (29.1) |
| Not at all | 68 (9.4) | 88 (12.1) | 65 (8.8) |
| (Missing) | 13 | 14 | 12 |
| CRC screening plans in the next 6 months, No. (%) | |||
| Not planning on screening in the next 6 months | 187 (26.1) | 212 (29.5) | 217 (29.6) |
| Thinking about it, but not in next 6 months | 151 (21.1) | 118 (16.4) | 131 (17.9) |
| Thinking of screening in next 6 months | 299 (41.7) | 312 (43.5) | 313 (42.7) |
| Already taking steps to be screened in next 6 months | 71 (9.9) | 65 (9.1) | 67 (9.1) |
| Already completed CRC screening within last 6 months | 9 (1.3) | 11 (1.5) | 5 (0.7) |
| (Missing) | 22 | 23 | 21 |
| Screening is too embarrassing: agree or strongly agree, No. (%) | 129 (17.7) | 106 (14.5) | 123 (16.6) |
| (Missing) | 10 | 14 | 10 |
| Blood stool test might be disgusting: agree or strongly agree, No. (%) | 103 (14.1) | 88 (12.1) | 80 (10.8) |
| (Missing) | 9 | 16 | 13 |
| Screening preference, No. (%) | |||
| FOBT | 349 (47.8) | 337 (46.1) | 357 (48.0) |
| Flexible sigmoidoscopy | 20 (2.7) | 24 (3.3) | 20 (2.7) |
| Colonoscopy | 158 (21.6) | 153 (20.9) | 159 (21.4) |
| FOBT and flexible sigmoidoscopy | 49 (6.7) | 50 (6.8) | 60 (8.1) |
| No test | 11 (1.5) | 26 (3.6) | 16 (2.2) |
| Don't know | 17 (2.3) | 13 (1.8) | 7 (0.9) |
| Other | 126 (17.3) | 128 (17.5) | 124 (16.7) |
| (Missing) | 9 | 10 | 11 |
Abbreviations: CRC, colorectal cancer; FOBT, fecal occult blood test; GED, graduate equivalency degree; SD, standard deviation.
a
Multiple endorsed race/ethnicity items were categorized in this order: Hispanic, black, Asian, other, and white. No response to the Hispanic item was combined with not Hispanic. No endorsement of Hispanic ethnicity or any race category was coded as missing.