Table 4 Univariate and multivariate Cox regression analyses of overall survival
Factors | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
Hazard ratio (95% CI) | P | Hazard ratio (95% CI) | P | |
Type of surgery | 0.002 | < 0.001 | ||
ESLR method | 0.744 (0.614–0.902) | 0.409 (0.274–0.612) | ||
Conventional method | 1(reference) | 1(reference) | ||
Age | 1.027 (1.002–1.052) | 0.034 | ||
Total number of harvested LNs | 0.973 (0.947–1.000) | 0.052 | ||
pT stage | 0.001 | 0.019 | ||
Tis | 0.135 (0.018–0.995) | 0.159 (0.021–1.203) | ||
T1 | 0.312 (0.158–0.615) | 0.403 (0.198–0.821) | ||
T2 | 0.718(0.433–1.191) | 0.596 (0.352–1.010) | ||
T3 | 1(reference) | 1(reference) | ||
pN stage | < 0.001 | 0.001 | ||
N0 | 0.350 (0.169–0.728) | 0.474 (0.225–0.997) | ||
N1 | 0.747 (0.362–1.540) | 1.023 (0.492–2.128) | ||
N2 | 0.922 (0.422–2.015) | 1.237 (0.562–2.724) | ||
N3 | 1(reference) | 1(reference) | ||
Number of harvested LNs along the left RLN | < 0.001 | < 0.001 | ||
1–2 | 1.886 (1.359–2.618) | 4.343 (2.420–7.794) | ||
3–5 | 1.066 (0.828–1.373) | 2.542 (1.635–3.951) | ||
6–7 | 1(reference) | 1(reference) | ||
Neoadjuvant treatment | 0.278 | |||
No | 1.261 (0.829–1.920) | |||
Yes | 1(reference) | |||