Table 3. Primary tumor characteristics and survival.
| Characteristics | Variables in the equation | ||||||
|---|---|---|---|---|---|---|---|
| β | SE | Wald χ2 | P | HR | 95.0% CI | ||
| Lower | Upper | ||||||
| Tumor size | −0.077 | 0.103 | 0.560 | 0.454 | 0.926 | 0.757 | 1.133 |
| Pathology | |||||||
| MA (vs. A) | 0.713 | 0.612 | 1.359 | 0.244 | 2.041 | 0.615 | 6.770 |
| ASC (vs. A) | −1.527 | 1.501 | 1.035 | 0.309 | 0.217 | 0.011 | 4.115 |
| Differentiation | |||||||
| P-M (vs. P) | −2.343 | 0.992 | 5.581 | 0.018* | 0.096 | 0.014 | 0.671 |
| M (vs. P) | −2.161 | 0.926 | 5.451 | 0.020* | 0.115 | 0.019 | 0.707 |
| M-W (vs. P) | −2.350 | 1.005 | 5.467 | 0.019* | 0.095 | 0.013 | 0.684 |
| W (vs. P) | −1.147 | 1.609 | 0.508 | 0.476 | 0.317 | 0.014 | 7.442 |
| Stage | |||||||
| II (vs. I) | 0.226 | 0.757 | 0.089 | 0.765 | 1.253 | 0.284 | 5.521 |
| III (vs. I) | 0.273 | 0.917 | 0.089 | 0.766 | 1.314 | 0.218 | 7.923 |
| IV (vs. I) | 2.637 | 1.203 | 4.806 | 0.028* | 13.972 | 1.322 | 147.602 |
| Treatment | |||||||
| C, R, or C+R (vs. no) | −2.221 | 1.222 | 3.305 | 0.069 | 0.108 | 0.010 | 1.189 |
| S (vs. no) | −3.072 | 1.394 | 4.856 | 0.028* | 0.046 | 0.003 | 0.712 |
| S+C, S+R, or S+C+R (vs. no) | −3.739 | 1.981 | 3.561 | 0.059 | 0.024 | 0.000 | 1.155 |
| Diabetes (vs. no) | 0.261 | 0.559 | 0.218 | 0.640 | 1.299 | 0.434 | 3.886 |
| Lung disease (vs. no) | 0.269 | 0.857 | 0.099 | 0.753 | 1.309 | 0.244 | 7.018 |
| CVA (vs. no) | 0.123 | 0.947 | 0.017 | 0.896 | 1.131 | 0.177 | 7.245 |
CI, confidence interval; A, adenocarcinoma; MA, mucoid adenocarcinoma; ASC, adenosquamous carcinoma; P, poorly; M, moderately; W, well; C, chemotherapy; R, radiotherapy; S, surgery; EMR, endoscopic mucosal resection; CVA, cerebrovascular accident. *, P<0.05.