Table 4. Logistic regression analysis of the risk factors for the independent prognostic factors.
| Factors | T stage | Ts | LNs | LVI | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OR(95%CI) | p value | OR(95%CI) | p value | OR(95%CI) | P value | OR(95%CI) | p value | ||||
| T stage | - | - | 2.552(2.314-2.785) | 0.009 | 0.904(0.693-1.421) | 0.492 | 1.105(0.898-1.374) | 0.124 | |||
| Ts | 2.478(2.032-2.931) | 0.021 | - | - | 0.929(0.798-1.221) | 0.146 | 0.921(0.793-1.101) | 0.145 | |||
| LNs | 0.932(0.643-1.403) | 0.402 | 0.891(0.776-1.164) | 0.132 | - | - | 1.108(0.989-1.385) | 0.533 | |||
| LVI | 1.057(0.933-1.439) | 0.105 | 0.903(0.728-1.098) | 0.123 | 1.019(0.913-1.234) | 0.365 | - | - | |||
| Age | 1.187(0.982-1.415) | 0.063 | 1.123(0.829-1.428) | 0.605 | 1.172(0.875-1.654) | 0.413 | 1.057(0.933-1.439) | 0.105 | |||
| Gender | 1.102(0.994-1.508) | 0.201 | 1.320(0.794-1.508) | 0.541 | 1.026(0.774-1.508) | 0.532 | 1.002(0.849-1.307) | 0.243 | |||
| Tumor location | 1.131(0.953-1.457) | 0.182 | 1.036(0.979-1.346) | 0.071 | 1.215(0.789-1.751) | 0.323 | 1.102(0.994-1.508) | 0.101 | |||
| Macroscopic type | 1.147(1.089-1.378) | 0.041 | 1.063(0.902-1.278) | 0.062 | 1.009(0.889-1.428) | 0.132 | 1.163(0.872-1.327) | 0.198 | |||
| Perineural invasion | 1.016(0.781-1.369) | 0.069 | 1.146(0.891-1.428) | 0.091 | 1.105(0.767-1.323) | 0.292 | 1.263(0.991-1.713) | 0.198 | |||
| Tumor differentiation | 1.208(0.665-1.537) | 0.219 | 1.106(0.804-1.425) | 0.197 | 1.326(0.701-1.843) | 0.197 | 1.106(0.934-1.425) | 0.067 | |||
Ts: tumor size; LNs: lymph nodes count; LVI: lymphovascular invasion; OR: Odds Ratio; CI: Confidence Interval.