Table 2:
Characteristics of stage II/III rectal adenocarcinoma patients by receipt of guideline-recommended surveillance procedures during the 14-month post-treatment surveillance period, row %.
| Received ≥1 Colonoscopy | Received ≥2 Physician | Received ≥2 CEA test |
Received ≥2 CT tests |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Characteristic | N (%) | No n=464 |
Yes n=560 |
P-value | No n=472 |
Yes n=552 |
P-value | No n=546 |
Yes n=478 |
P-value | No n=815 |
Yes n=209 |
P-value | |
| Age | 66-70 | 241 (24) | 32 | 68 | <0.0001 | 42.7 | 57.3 | <0.0001 | 46.5 | 53.5 | <0.0001 | 72.2 | 27.8 | <0.0001 |
| >70-75 | 229 (22) | 38.4 | 61.6 | 38.4 | 61.6 | 41.9 | 58.1 | 70.3 | 29.7 | |||||
| >75-80 | 216 (21) | 37.5 | 62.5 | 39.8 | 60.2 | 51.8 | 48.2 | 84.7 | 15.3 | |||||
| >80 | 338 (33) | 64.5 | 35.5 | 57.7 | 42.3 | 66.9 | 33.1 | 87.9 | 12.1 | |||||
| Gender | Male | 549 (54) | 46.7 | 53.3 | 0.3944 | 44.4 | 55.6 | 0.3179 | 52.8 | 47.2 | 0.7754 | 82.5 | 17.5 | 0.0301 |
| Female | 475 (46) | 44.1 | 55.9 | 47.5 | 52.5 | 53.7 | 46.3 | 77 | 23 | |||||
| Marital status | Not married1 | 511 (50) | 53.6 | 46.4 | <0.0001 | 52.6 | 47.4 | <0.0001 | 60.3 | 39.7 | <0.0001 | 83 | 17 | 0.0073 |
| Married | 513 (50) | 37 | 63 | 39.6 | 60.4 | 46.4 | 53.6 | 76.2 | 23.8 | |||||
| Race | Other/Unknown | 148 (14) | 50 | 50 | 0.2155 | 56.8 | 43.2 | 0.0049 | 57.4 | 42.6 | 0.2783 | 82.4 | 17.6 | 0.3536 |
| White | 876 (86) | 44.5 | 55.5 | 44.3 | 55.7 | 52.6 | 47.4 | 79.1 | 20.9 | |||||
| Rural status | Rural | 221 (22) | 48.4 | 51.6 | 0.2952 | 45.7 | 54.3 | 0.6331 | 52.3 | 47.7 | 0.214 | 80.5 | 19.5 | 0.1939 |
| Urban1 | 803 (78) | 44.5 | 55.5 | 47.5 | 52.5 | 57 | 43 | 76.5 | 23.5 | |||||
| Living below | Above median | 489 (48) | 47 | 53 | 0.2898 | 49.5 | 50.5 | 0.0372 | 56.2 | 43.8 | 0.0737 | 80.6 | 19.4 | 0.4557 |
| poverty indicator | Below median | 535 (52) | 43.7 | 56.3 | 43 | 57 | 50.7 | 49.3 | 78.7 | 21.3 | ||||
| With college | Above median | 540 (53) | 43.9 | 56.1 | 0.3337 | 46.1 | 53.9 | 0.9906 | 52.8 | 47.2 | 0.7132 | 79.6 | 20.4 | 0.9734 |
| Education | Below median | 484 (47) | 46.9 | 53.1 | 46.1 | 53.9 | 53.9 | 46.1 | 79.6 | 20.4 | ||||
| Stage | II | 598 (58) | 45.1 | 54.9 | 0.9018 | 45.3 | 54.7 | 0.555 | 53.7 | 46.3 | 0.7852 | 78.8 | 21.2 | 0.4634 |
| III | 426 (42) | 45.5 | 54.5 | 47.2 | 52.8 | 52.8 | 47.2 | 80.8 | 19.2 | |||||
| Charlson score | 0 | 543 (53) | 41.2 | 58.8 | 0.0009 | 42.5 | 57.5 | 0.006 | 48.2 | 51.8 | <0.0001 | 77.3 | 22.7 | 0.0464 |
| 1 | 274 (27) | 44.9 | 55.1 | 46 | 54 | 52.9 | 47.1 | 79.6 | 20.4 | |||||
| 2+ | 207 (20) | 56.5 | 43.5 | 55.6 | 44.4 | 0.0378 | 67.1 | 32.9 | 85.5 | 14.5 | ||||
| Function-Related | 0 | 665 (65) | 42.6 | 57.4 | 0.0016 | 43.8 | 56.2 | 50.3 | 49.7 | <0.0001 | 77 | 23 | 0.0212 | |
| indicator | 1 | 211 (21) | 44.3 | 55.7 | 46.7 | 53.3 | 53.8 | 46.2 | 84.3 | 15.7 | ||||
| 2+ | 148 (14) | 58.8 | 41.2 | 55.4 | 44.6 | <0.0001 | 66.2 | 33.8 | 84.5 | 15.5 | ||||
| CRT sequence received | No CRT | 360 (25) | 57.2 | 42.8 | <0.0001 | 59.4 | 40.6 | 73.1 | 26.9 | <0.0001 | 91.7 | 8.3 | <0.0001 | |
| Neoadjuvant CRT + Adjuvant Chemo | 211 (27) | 31.8 | 68.2 | 30.8 | 69.2 | 29.9 | 70.1 | 67.8 | 32.2 | |||||
| Neoadjuvant CRT | 226 (25) | 44.7 | 55.3 | 42.9 | 57.1 | 47.8 | 52.2 | 77 | 23 | |||||
| Adjuvant CRT only | 69 (8) | 23.2 | 76.8 | 36.2 | 63.8 | 40.6 | 59.4 | 62.3 | 37.7 | |||||
| Other | 158 (15) | 46.8 | 53.2 | 44.9 | 55.1 | 53.2 | 46.8 | 79.1 | 20.9 | |||||
| Surgical | No | 706 (69) | 43.1 | 56.9 | 0.0309 | 42.6 | 57.4 | 0.0009 | 49.3 | 50.7 | 0.0001 | 79 | 21 | 0.513 |
| complications | Yes | 318 (31) | 50.3 | 49.7 | 53.8 | 46.2 | 62.3 | 37.7 | 80.8 | 19.2 | ||||
| Surgeon volume2 | High volume | 631 (62) | 41.7 | 58.3 | 0.012 | 41 | 59 | <0.0001 | 47.2 | 52.8 | <0.0001 | 78 | 22 | 0.2657 |
| Low volume | 286 (28) | 50.7 | 49.3 | 52.1 | 47.9 | 61.5 | 38.5 | 82.2 | 17.8 | |||||
| Unknown | 107 (10) | 52.3 | 47.7 | 59.8 | 40.2 | 67.3 | 32.7 | 82.2 | 17.8 | |||||
| Hospital volume2 | High volume | 637 (62) | 41.3 | 58.7 | 0.0032 | 44.3 | 55.7 | 0.2753 | 49.6 | 50.4 | 0.0059 | 78.3 | 21.7 | 0.3526 |
| Low volume | 243 (24) | 50.6 | 49.4 | 50.2 | 49.8 | 61.3 | 38.7 | 82.7 | 17.3 | |||||
| Unknown | 144 (14) | 54.2 | 45.8 | 47.2 | 52.8 | 56.3 | 43.7 | 79.9 | 20.1 | |||||
| Proximity to | 0-15 minutes | 277 (27) | 37.2 | 62.8 | 46.9 | 53.1 | 53.8 | 46.2 | 80.5 | 19.5 | ||||
| high-volume | >15-30 minutes | 169 (16) | 49.7 | 50.3 | 0.0096 | 49.7 | 50.3 | 0.6823 | 55.6 | 44.4 | 0.9019 | 85.2 | 14.8 | 0.1608 |
| hospital | 30+ minutes | 293 (29) | 45.7 | 54.3 | 45.1 | 54.9 | 52.6 | 47.4 | 76.8 | 23.2 | ||||
| Unknown | 285 (28) | 50.2 | 49.8 | 44.2 | 55.8 | 52.3 | 47.7 | 78.3 | 21.7 | |||||