The effect of spread through air spaces on postoperative recurrence-free survival in patients with multiple primary lung cancers

Table 3 Prognostic factors for recurrence-free survival

variables	Univariate analysis			Multivariate analysis
variables	95%CI	HR	P	95%CI	HR	P
Male Age Smoker Lobectomy Solid nodules on CT Tumor size	0.25–1.78 0.95–1.11 0.15–1.26 0.50–15.10 0.001–0.67 1.18–1.69	0.66 1.03 0.44 2.74 0.01 1.41	0.41 0.44 0.13 0.25 0.03 0.001	0.20–2.63 0.92–1.09 0.49–5.45 0.84–18.73 0.001–0.82 0.74–1.62	0.72 1.00 1.63 3.96 0.15 1.10	0.62 0.54 0.43 0.08 0.08 0.02
LV invasion(+)	0.03–0.23	0.08	0.001	0.60–7.16	2.06	0.25
Pleural Invasion(+)	0.02–0.15	0.05	0.001	1.58–13.16	4.56	0.001
STAS(+)	0.001–0.98	0.002	0.04	0.001–1.52	0.5	0.03

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