Table 6. Multivariate analysis among all male ESCC patients.
| Variable | All male ESCC patients (N=2,400) |
||
|---|---|---|---|
| RR | 95% CI | P | |
| Race/ethnicity | |||
| Male Chinese residents | 1.00 | – | – |
| Male Caucasians | 1.54 | 1.26-1.88 | <0.01 |
| Age group | |||
| <60 | 1.00 | – | – |
| 60~69 | 1.26 | 1.18-1.35 | <0.01 |
| 70+ | 2.78 | 2.40-2.96 | <0.01 |
| AJCC tumor stage | |||
| 1 | 1.00 | – | – |
| 2 | 1.19 | 0.49-1.91 | 0.38 |
| 3 | 5.83 | 5.22-6.37 | <0.01 |
| 4 | 12.15 | 9.82 -14.26 | <0.01 |
| Primary site | |||
| Middle third of esophagus | 1.00 | – | – |
| Cervical esophagus | 0.94 | 0.64-1.21 | 0.33 |
| Upper third of esophagus | 1.13 | 0.73-1.61 | 0.45 |
| Lower third of esophagus | 1.09 | 0.89-1.25 | 0.19 |
| Overlapping lesion of esophagus | 0.89 | 0.68-1.14 | 0.25 |
| Esophagus, NOS | 0.95 | 0.85-1.06 | 0.13 |
ESCC, esophageal squamous cell carcinoma; AJCC, American Joint Commission on Cancer; RR, relative risk; CI, confidence interval.