TABLE 2.
Multivariable Cox proportional hazards model results regarding overall survival, stratified by year of diagnosis and age at diagnosis ≥40 years.
| Variable | HR (95%CI) | p |
|---|---|---|
| Academic vs. community program | 1.01 (0.92, 1.11) | 0.81 |
| High vs. low volume (91% cut point) | 1.08 (0.99, 1.17) | 0.096 |
| Age | 1.01 (1.01, 1.01) | <0.001 |
| Sex (female vs. male) | 1.03 (0.97, 1.11) | 0.329 |
| Black vs. White | 1 (0.87, 1.14) | 0.951 |
| Asian vs. White | 1.22 (1.04, 1.44) | 0.015 |
| Other vs. White | 1.33 (1.07, 1.66) | 0.012 |
| Ethnicity Spanish/Hispanic vs. nonSpanish/Hispanic | 1.23 (1.1, 1.37) | <0.001 |
| Private insurance vs. none | 0.73 (0.63, 0.85) | <0.001 |
| Medicaid vs. none | 0.89 (0.75, 1.05) | 0.168 |
| Medicare vs. none | 0.65 (0.54, 0.77) | <0.001 |
| Other insurance vs. none | 1.22 (0.9, 1.65) | 0.21 |
| Charlson 1–2 vs. 0 | 1.05 (0.96, 1.14) | 0.316 |
| Charlson 3 vs. 0 | 1.14 (0.84, 1.55) | 0.409 |
| Rural vs. metro | 0.81 (0.68, 0.98) | 0.03 |
| Urban vs. metro | 0.83 (0.74, 0.93) | 0.002 |
| Median income | ||
| < $38 000 vs. 38 000–47 999 | 1.05 (0.93, 1.18) | 0.467 |
| < $38 000 vs. 48 000–62 999 | 1.12 (0.99, 1.28) | 0.074 |
| < $38 000 vs. ≥ 63 000 | 1.15 (1, 1.33) | 0.056 |
| Distance from clinic | ||
| 10–100 miles vs. >100 miles | 0.87 (0.77, 0.98) | 0.019 |
| 10 miles or less vs. >100 miles | 0.8 (0.7, 0.91) | 0.001 |
Note: Time was defined as last “contact or death, months from diagnosis,” and event was defined as “vital status last contact or death” (1 = death). p‐values <0.05 were considered significant and were bolded.
Abbreviation: HR, hazard ratio.