Table 1.
Demographic Characteristics of Decedents with Stage IV Lung and Colorectal Cancer, Stratified by Tertiles of Survival Time
| Lung cancer | Colorectal cancer | |||||||
|---|---|---|---|---|---|---|---|---|
| Bottom tertile n = 489 | Middle tertile n = 485 | Top tertile n = 412 | p | Bottom tertile n = 196 | Middle tertile n = 163 | Top tertile n = 95 | p | |
| Survival (months)a | ||||||||
| Median | 1.2 | 5.3 | 15 | 3.0 | 18 | 44 | ||
| Range | 0.03, 2.7 | 2.7, 9.4 | 9.4, 99 | 0.03, 10 | 11, 31 | 31, 95 | ||
| Age at diagnosis | <0.001 | <0.001 | ||||||
| 21–54 | 47 (10) | 59 (12) | 59 (14) | 31 (16) | 44 (27) | 31 (33) | ||
| 55–64 | 106 (22) | 135 (28) | 115 (28) | 33 (17) | 46 (28) | 29 (31) | ||
| 65–74 | 146 (30) | 180 (37) | 137 (33) | 53 (27) | 43 (26) | 22 (23) | ||
| 75+ | 190 (39) | 111 (23) | 101 (25) | 79 (40) | 30 (18) | 13 (14) | ||
| Gender | 0.25 | 0.046 | ||||||
| Male | 298 (61) | 317 (65) | 250 (61) | 101 (52) | 100 (61) | 62 (65) | ||
| Female | 191 (39) | 168 (35) | 162 (39) | 95 (48) | 63 (39) | 33 (35) | ||
| Race/ethnicityb | 0.67 | 0.34 | ||||||
| Non-Hispanic white | 373 (76) | 379 (78) | 304 (74) | 127 (65) | 98 (60) | 54 (57) | ||
| Non-Hispanic black | 43 (9) | 49 (10) | 47 (11) | 35 (18) | 37 (23) | 17 (18) | ||
| Other | 73 (15) | 57 (12) | 61 (15) | 34 (17) | 28 (17) | 24 (25) | ||
| Comorbidity | 0.01 | 0.11 | ||||||
| None | 85 (17) | 87 (18) | 95 (23) | 50 (26) | 54 (33) | 33 (35) | ||
| Mild | 173 (35) | 182 (38) | 163 (40) | 75 (38) | 63 (39) | 34 (36) | ||
| Moderate | 105 (21) | 111 (23) | 90 (22) | 35 (18) | 28 (17) | <25 | ||
| Severe | 126 (26) | 105 (22) | 64 (16) | 36 (18) | 18 (11) | <10 | ||
| HMO | 0.24 | 0.14 | ||||||
| No | 351 (72) | 367 (76) | 293 (71) | 136 (69) | 126 (77) | 64 (67) | ||
| Yes | 138 (28) | 118 (24) | 119 (29) | 60 (31) | 37 (23) | 31 (33) | ||
| Study site | <0.001 | 0.001 | ||||||
| CRN | 90 (18) | 66 (14) | 65 (16) | 29 (15) | 24 (15) | 17 (18) | ||
| Northern California | 94 (19) | 103 (21) | 91 (22) | 62 (32) | 35 (21) | 24 (25) | ||
| Alabama | 50 (10) | 56 (12) | 64 (16) | 24 (12) | 38 (23) | 19 (20) | ||
| Los Angeles county | 93 (19) | 78 (16) | 41 (10) | 49 (25) | 23 (14) | 15 (16) | ||
| Iowa | 130 (27) | 126 (26) | 92 (22) | — | — | — | ||
| North Carolina | — | — | — | <25 | 20 (12) | <25 | ||
| VA | 32 (7) | 56 (12) | 59 (14) | <10 | 23 (14) | <10 | ||
Tertiles have unequal numbers of patients because tertile boundaries were calculated from the survival times of all patients with known vital status and any medical record abstraction data. Select cells frequencies are shown as <10 or <25 patients so that cells with <10 patients are masked.
a
Survival from diagnosis.
b
8% of lung and 5% of colorectal cancer patients were Hispanic; and 6% of lung and 5% of colorectal cancer patients were Asian.