Table 1.
Demographic and clinical characteristics of eligible study population (N = 1311).
| Demographic characteristics | Colorectal cancer patients |
Lung cancer patients |
Gastric cancer patients |
|||
|---|---|---|---|---|---|---|
|
n = 783 |
n = 485 |
n = 43 |
||||
| N/mean/median | %/SD/min, max | N/mean/median | %/SD/min, max | N/mean/median | %/SD/min, max | |
| Age (mean, SD) | 65.4 | 13.1 | 69.3 | 10.2 | 66.1 | 12.9 |
| Median, min, max | 65 | 29, 95 | 70 | 38, 90 | 68 | 34, 89 |
| Gender (N, %) | ||||||
| Male | 430 | 54.9% | 238 | 49.1% | 27 | 62.8% |
| Female | 353 | 45.1% | 247 | 50.9% | 16 | 37.2% |
| Race/Ethnicity (N, %) | ||||||
| White | 564 | 72.0% | 359 | 74.0% | 27 | 62.8% |
| Black | 41 | 5.2% | 30 | 6.2% | 4 | 9.3% |
| Hispanic | 7 | 0.9% | 2 | 0.4% | 5 | 11.6% |
| Other | 95 | 12.1% | 52 | 10.7% | 2 | 4.7% |
| Unknown/missing | 76 | 9.7% | 42 | 8.7% | 5 | 11.6% |
| Geographic region (N, %) | ||||||
| Northeast | 195 | 24.9% | 119 | 24.5% | 8 | 18.6% |
| North Central | 136 | 17.4% | 126 | 26.0% | 8 | 18.6% |
| South | 326 | 41.6% | 187 | 38.6% | 23 | 53.5% |
| West | 126 | 16.1% | 53 | 10.9% | 4 | 9.3% |
| Unknown | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% |
| Primary payer (N, %) | ||||||
| Commercial | 399 | 51.0% | 174 | 35.9% | 18 | 41.9% |
| Medicare | 384 | 49.0% | 311 | 64.1% | 25 | 58.1% |
| Clinical characteristics | N/Mean/median | %/SD/min, max | N/mean/median | %/SD/min, max | N/mean/median | %/SD/min, max | |||
|---|---|---|---|---|---|---|---|---|---|
| Disease stage (N, %) | |||||||||
| Stage 0 | 1 | 0.1% | 1 | 0.2% | 0 | 0.0% | |||
| Stage I | 47 | 6.0% | 62 | 12.8% | 5 | 11.6% | |||
| Stage II | 149 | 19.0% | 51 | 10.5% | 5 | 11.6% | |||
| Stage III | 189 | 24.1% | 76 | 15.7% | 5 | 11.6% | |||
| Stage IV | 85 | 10.9% | 72 | 14.8% | 8 | 18.6% | |||
| Unknown / missing | 312 | 39.8% | 223 | 46.0% | 20 | 46.5% | |||
| Charlson Comorbidity Index (CCI)a | |||||||||
| Mean CCI (mean, SD) | 3.16 | 2.76 | 4.09 | 3.13 | 3.14 | 2.69 | |||
| CCI = 0 (N, %) | 115 | 14.7% | 39 | 8.0% | 6 | 14.0% | |||
| CCI = 1 (N, %) | 28 | 3.6% | 20 | 4.1% | 0 | 0.0% | |||
| CCI = 2 (N, %) | 331 | 42.3% | 133 | 27.4% | 21 | 48.8% | |||
| CCI = 3 (N, %) | 110 | 14.0% | 95 | 19.6% | 5 | 11.6% | |||
| CCI = 4 (N, %) | 34 | 4.3% | 56 | 11.5% | 2 | 4.7% | |||
| CCI = 5 (N, %) | 18 | 2.3% | 19 | 3.9% | 1 | 2.3% | |||
| CCI = 6 (N, %) | 5 | 0.6% | 12 | 2.5% | 1 | 2.3% | |||
| CCI = 7 (N, %) | 4 | 0.5% | 6 | 1.2% | 0 | 0.0% | |||
| CCI = 8 (N, %) | 92 | 11.7% | 33 | 6.8% | 6 | 14.0% | |||
| CCI = 9 (N, %) | 32 | 4.1% | 34 | 7.0% | 0 | 0.0% | |||
| CCI = 10+ (N, %) | 14 | 1.8% | 38 | 7.8% | 1 | 2.3% | |||
| Length of follow-up (days) | |||||||||
| Mean, SD | 493.5 | 511.3 | 377.2 | 403.7 | 429.7 | 370.5 | |||
| Median, Min, Max | 365 | 1, 3395 | 240 | 1, 2300 | 312 | 4, 1765 |
Abbreviations. SD, standard deviation.
aDuring the 6-month pre-index period.