Table 3.
Cox proportional hazards regression model for overall survival after PSM.
| Characteristic | Univariate | Multivariate | ||
|---|---|---|---|---|
| HR.CI95 | P | HR (95% CI) | P | |
| Age | ||||
| Younger | 1.00 [reference] | 1.00 [reference] | ||
| Old | 2.52 [1.25–5.08] | 0.01 | 2.15 [1.05–4.41] | 0.037 |
| Sex | ||||
| Female | 1.00 [reference] | 1.00 [reference] | ||
| Male | 2.02 [1.04–3.91] | 0.037 | 1.69 [0.81–3.52] | 0.163 |
| Race (%) | ||||
| White | 1.00 [reference] | 1.00 [reference] | ||
| Black | 0.46 [0.11–1.91] | 0.282 | 0.58 [0.14–2.48] | 0.465 |
| Other | 1.88 [0.78–4.52] | 0.159 | 1.76 [0.69–4.49] | 0.238 |
| Unknown | 0 [0–Inf] | 0.996 | 0.00 [0.00–Inf] | 0.997 |
| Marital (%) | ||||
| Marry | 1.00 [reference] | 1.00 [reference] | ||
| Single | 1.09 [0.37–3.18] | 0.882 | 1.45 [0.49–4.32] | 0.507 |
| Other | 0.98 [0.49–1.93] | 0.942 | 1.37 [0.66–2.86] | 0.402 |
| Grade (%) | ||||
| Well | 1.00 [reference] | 1.00 [reference] | ||
| Moderate | 1.4 [0.62–3.19] | 0.418 | 1.43 [0.61–3.36] | 0.411 |
| Tumor size (%) | ||||
| ≤ 1 cm | 1.00 [reference] | 1.00 [reference] | ||
| 1–2 cm | 0.86 [0.45–1.65] | 0.657 | 0.83 [0.43–1.63] | 0.597 |
| Surgery | ||||
| No | 1.00 [reference] | 1.00 [reference] | ||
| Yes | 0.44 [0.22–0.85] | 0.015 | 0.41 [0.20–0.82] | 0.011 |
| Primary tumor size | ||||
| Head | 1.00 [reference] | 1.00 [reference] | ||
| Body and tail | 1.81 [0.88–3.74] | 0.108 | 1.28 [0.59–2.77] | 0.527 |
| Other | 0.77 [0.27–2.22] | 0.631 | 0.60 [0.20–1.80] | 0.359 |