Table 2. Univariate and multivariate analysis for cancer-specific survival.
| Variable | Level | Univariate | Multivariate | |||
|---|---|---|---|---|---|---|
| HR (95% CI) | P value | HR (95% CI) | P value | |||
| Age | 80–84 years | 1 | 1 | |||
| 85+ years | 1.23 (1.17–1.29) | <0.001* | 1.02 (0.97–1.07) | 0.47 | ||
| Race | Black | 1 | 1 | |||
| White | 1.00 (0.91–1.10) | 0.93 | 1.04 (0.94–1.14) | 0.47 | ||
| Other | 0.90 (0.79–1.03) | 0.13 | 0.93 (0.81–1.06) | 0.28 | ||
| Sex | Female | 1 | 1 | |||
| Male | 1.06 (1.00–1.10) | 0.02* | 1.14 (1.09–1.19) | <0.001* | ||
| Stage | Distant | 1 | 1 | |||
| Regional | 0.57 (0.54–0.61) | <0.001* | 0.58 (0.55–0.62) | <0.001* | ||
| Localized | 0.39 (0.35–0.43) | <0.001* | 0.35 (0.32–0.39) | <0.001* | ||
| Treatment# | No active | 1 | –# | |||
| Yes | 0.36 (0.34–0.38) | <0.001* | ||||
| Treatment methods# | No active treatment | 1 | 1 | |||
| Local therapy only | 0.44 (0.41–0.48) | <0.001* | 0.49 (0.45–0.53) | <0.001* | ||
| Chemotherapy only | 0.39 (0.37–0.41) | <0.001* | 0.35 (0.33–0.37) | <0.001* | ||
| Chemotherapy and local therapy | 0.28 (0.26–0.30) | <0.001* | 0.29 (0.27–0.31) | <0.001* | ||
*, significant P values. #, only treatment methods, but not treatment, were included in the multivariate analysis to avoid duplication. HR, hazard ratio; CI, confident interval.