Table 1.
Characteristics of PROSPR participants with a positive fecal occult blood test, 2011–2012 (N=62,384)
| Characteristic | Overall N=62,384 | GH N=2,707 (4.34%) | KPNC N=32,263 (51.72%) | KPSC N=27,013 (43.30%) | PHHS-UTSW N=401 (0.64%) |
|---|---|---|---|---|---|
|
| |||||
| Col. % | Col. % | Col. % | Col. % | Col. % | |
| Age (years) at positive test | |||||
| 50–54 | 20.39 | 14.85 | 20.03 | 21.19 | 33.17 |
| 55–59 | 20.21 | 17.33 | 20.11 | 20.40 | 34.41 |
| 60–64 | 20.51 | 20.58 | 21.16 | 19.54 | 32.42 |
| 65–69 | 17.35 | 17.55 | 17.89 | 16.94 | 0 |
| 70–75 | 16.29 | 16.11 | 16.46 | 16.36 | 0 |
| 76–84 | 4.22 | 10.53 | 3.52 | 4.49 | 0 |
| 85–89 | 1.03 | 3.07 | 0.83 | 1.07 | 0 |
| Gender | |||||
| Female | 47.76 | 48.69 | 47.20 | 48.12 | 62.84 |
| Male | 52.24 | 51.31 | 52.80 | 51.88 | 37.16 |
| Unknown | 0 | 0 | 0.01 | 0 | 0 |
| Charlson comorbidity score in calendar year before positive test | |||||
| Unknown | 10.21 | 6.91 | 9.03 | 11.26 | 56.36 |
| 0 | 51.78 | 48.13 | 55.90 | 47.71 | 19.20 |
| 1 | 17.32 | 16.00 | 17.77 | 16.95 | 14.96 |
| 2 | 9.53 | 11.34 | 9.22 | 9.81 | 3.99 |
| 3+ | 11.16 | 17.62 | 8.09 | 14.26 | 5.49 |
| Race/ethnicity | |||||
| NH White | 54.29 | 76.41 | 57.75 | 48.56 | 14.46 |
| Hispanic | 18.50 | 4.21 | 12.49 | 26.95 | 29.43 |
| NH Asian/Pacific Islander | 13.11 | 8.64 | 15.71 | 10.58 | 4.24 |
| NH Black | 8.14 | 4.25 | 6.91 | 9.36 | 51.12 |
| NH Other | 0.63 | 3.92 | 0.66 | 0.28 | 0.25 |
| Unknown/Missing | 5.33 | 2.84 | 6.48 | 4.26 | 0.50 |
| Body mass index (kg/m2) in calendar year before positive test | |||||
| <25 | 19.42 | 19.87 | 20.40 | 18.28 | 14.46 |
| 25 to <30 | 30.20 | 32.03 | 29.97 | 30.27 | 31.17 |
| 30 to <35 | 20.86 | 23.01 | 20.32 | 21.21 | 26.18 |
| 35+ | 16.43 | 21.98 | 15.77 | 16.49 | 27.43 |
| Missing | 13.09 | 3.10 | 13.53 | 13.75 | 0.75 |
| Type of fecal blood test | |||||
| FIT | 98.05 | 68.86 | 98.84 | 100.00 | 99.75 |
| Guaiac | 1.95 | 31.14 | 1.16 | 0.00 | 0.25 |
| Prior colorectal cancer screening | |||||
| No | 22.36 | 37.46 | 20.83 | 22.37 | 43.14 |
| Yes | 77.64 | 62.54 | 79.17 | 77.63 | 56.86 |
FIT: fecal immunohistochemical test; GH: Group Health; KPNC: Kaiser Permanente Northern California; KPSC: Kaiser Permanente Southern California; NH: non-Hispanic; PHHS-UTWS: Parkland Health and Hospital System – University of Texas Southwestern Medical Center; PROSPR: Population-Based Research Optimizing Screening through Personalized Regimens