Table 4.

Stratified univariate Cox regression analyses in matched cohort.

T stage	Wedge resection vs. lobectomy			Segmentectomy vs. lobectomy
	HR	95% CI	p-value	HR	95% CI	p-value
Overall survival
IA1	1.094	0.431–2.777	0.851	1.346	0.294–6.166	0.702
IA2	1.836	1.317–2.560	<0.001	0.956	0.526–1.737	0.883
IA3	2.042	1.325–3.149	0.001	1.192	0.572–2.485	0.640
IB	1.587	1.132–2.225	0.007	1.316	0.747–2.316	0.342
Lung cancer–specific survival
IA1	1.298	0.324–5.195	0.713	3.172	0.577–17.44	0.184
IA2	1.804	1.147–2.838	0.011	0.818	0.343–1.948	0.650
IA3	3.433	1.847–6.383	<0.001	1.598	0.575–4.437	0.368
IB	1.571	1.014–2.435	0.043	0.907	0.382–2.153	0.824