Table 3 Demographic and clinical characteristicsa of stage II/III colon cancer patients (n = 17,860)
Characteristic | More Adherent | Less Adherent | P value |
|---|---|---|---|
Study population | 11,840 (66.3) | 6020 (33.7) | Â |
Median follow-up time |  |  | <  0.001 |
(years), 95% CI | 9.0 (8.9–9.0) | 9.6 (9.4–9.7) |  |
5-year vital status |  |  | <  0.001 |
 Alive | 8229 (69.5) | 3908 (64.9) |  |
 Deceased | 3611 (30.5) | 2112 (35.1) |  |
Cause of death |  |  | <  0.001 |
 Colon cancer | 2133 (59.1) | 787 (37.3) |  |
 Other Cancer | 333 (9.2) | 206 (9.7) |  |
 Other | 1145 (31.7) | 1119 (53.0) |  |
25% cancer death time |  |  | <  0.001 |
(years), 95% CI | 5.3 (5.0–5.8) | 7.1 (6.3–7.8) |  |
Age at diagnosis |  |  | <  0.001 |
 66–74 years | 5814 (49.1) | 2114 (35.1) |  |
 75–79 years | 3417 (28.9) | 1774 (29.5) |  |
 80–84 years | 2609 (22.0) | 2132 (35.4) |  |
Race |  |  | <  0.001 |
 White | 10,047 (84.9) | 5066 (84.2) |  |
 Black | 945 (8.0) | 563 (9.3) |  |
 Asian | 421 (3.6) | 163 (2.7) |  |
 Other | 242 (2.0) | 97 (1.6) |  |
 Hispanic | 158 (1.3) | 100 (1.7) |  |
 Native American | 21 (0.2) | 25 (0.4) |  |
 Unknown | 6 (0.0) | 6 (0.1) |  |
Sex | Â | Â | 0.304 |
 Female | 6645 (56.1) | 3330 (55.3) |  |
 Male | 5195 (43.9) | 2690 (44.7) |  |
Marital status |  |  | <  0.001 |
 Married or partner | 6876 (58.1) | 2915 (48.4) |  |
 Separated/divorced | 764 (6.5) | 437 (7.3) |  |
 Single | 855 (7.2) | 533 (8.8) |  |
 Widowed | 3009 (25.4) | 1897 (31.5) |  |
 Unknown | 336 (2.8) | 238 (4.0) |  |
Year of diagnosis | Â | Â | 0.011 |
 2002–2003 | 3411 (28.8) | 1820 (30.2) |  |
 2004–2006 | 4442 (37.5) | 2304 (38.3) |  |
 2007–2009 | 3987 (33.7) | 1896 (31.5) |  |
State buy-in coverage |  |  | <  0.001 |
 No | 9574 (80.9) | 4306 (71.5) |  |
 Yes | 2266 (19.1) | 1714 (28.5) |  |
Census tract poverty level |  |  | <  0.001 |
 Low | 3298 (27.8) | 1495 (24.8) |  |
 Lower-middle | 3290 (27.8) | 1629 (27.1) |  |
 Upper-middle | 3227 (27.3) | 1726 (28.7) |  |
 High | 1988 (16.8) | 1150 (19.1) |  |
 Unknown | 37 (0.3) | 20 (0.3) |  |
Geographic residency | Â | Â | 0.473 |
 Urban | 10,318 (87.2) | 5263 (87.4) |  |
 Less Urban | 1221 (10.3) | 627 (10.4) |  |
 Rural | 299 (2.5) | 129 (2.2) |  |
 Unknown | 2 (0.0) | 1 (0.0) |  |
SEER region | Â | Â | 0.483 |
 West | 4226 (35.7) | 2214 (36.8) |  |
 South | 3089 (26.1) | 1556 (25.8) |  |
 Northeast | 2599 (22.0) | 1299 (21.6) |  |
 Midwest | 1754 (14.8) | 878 (14.6) |  |
 Pacific | 172 (1.4) | 73 (1.2) |  |
Disease stage |  |  | <  0.001 |
 Stage II | 5912 (49.9) | 4091 (68.0) |  |
 Stage III | 5928 (50.1) | 1929 (32.0) |  |
Tumor grade |  |  | <  0.001 |
 Low grade | 8811 (74.4) | 4811 (79.9) |  |
 High grade | 2784 (23.5) | 1107 (18.4) |  |
 Unknown | 245 (2.1) | 102 (1.7) |  |
Tumor site | Â | Â | 0.153 |
 Proximal colon | 7627 (64.4) | 3943 (65.5) |  |
 Distal colon | 4213 (35.6) | 2077 (34.5) |  |
Adjuvant chemotherapy |  |  | <  0.001 |
 No | 5518 (46.6) | 4847 (80.5) |  |
 Yes | 6322 (53.4) | 1173 (19.5) |  |
Charlson Comorbidity Index |  |  | <  0.001 |
 0 | 5953 (50.3) | 2539 (42.2) |  |
 1 | 3229 (27.3) | 1617 (26.9) |  |
 2–3 | 2143 (18.1) | 1428 (23.7) |  |
 4 + | 515 (4.3) | 436 (7.2) |  |