Table 3.

Results of Cox regression multivariate PFS analysis of the patients

	B	SE	Wald	P	HR	95.0% CI for HR
Gender	0.237	0.386	0.376	0.540	1.267	0.595–2.700
Age	−0.005	0.386	0.000	0.991	0.995	0.467–2.121
Smoking	0.299	0.521	0.329	0.566	1.348	0.485–3.746
Tumor site	0.571	0.363	2467	0.116	1.770	0.868–3.608
Tumor site of lung	−0.290	0.400	0.528	0.468	0.748	0.342–1.637
Tumor size	0.308	0.480	0.412	0.521	1.361	0.531–3.485
ECOG	0.810	0.445	3.323	0.068	2.249	0.941–5.375
Stage	0.308	0.482	0.407	0.523	1.361	0.529–3.502
Treatment regimen	−1.878	0.386	23.691	0.001	0.153	0.072–0.326

B, regression coefficient; SE, standard error; Wald, Wald value; HR, hazard ratio; CI, confidence interval; MWA, microwave ablation; PFS, progression‐free survival; HR, hazard ratio; CI, confidence interval. ECOG, Eastern Cooperative Oncology Group.