Table 2:

Univariable and multivariable competing risk regression for noncancer-specific death after propensity score matching

	Univariable analysis			Final multivariable model
Variables	SHR	95% CI	P	SHR	95% CI	P
Year of surgery (per 1 year increase)	0.97	0.88–1.08	0.6
Age at surgery (per 1 year increase)	1.06	1.00–1.12	0.04	1.07	1.01–1.14	0.030
Male (vs. female)	3.22	1.57–6.60	0.001	3.88	1.78–8.44	<0.001
Smoking history (vs. never)
Former	0.95	0.39–2.33	0.9
Current	1.41	0.45–4.42	0.6
COPD history (vs. none)	1.08	0.50–2.32	0.9
CVD history (vs. none)	2.32	1.2–4.5	0.012
DM history (vs. none)	1.56	0.68–3.55	0.3
BMI (per 1 index increase)	1.04	0.98–1.09	0.2
Serum creatinine (per 1mg/dL increase)	4.35	2.07–9.13	<0.001
ppoFEV1 (per 1% increase)	0.99	0.97–1.01	0.2
ppoDLCO (per 1% increase)	0.98	0.96–0.99	0.013	0.98	0.96–1.00	0.022
Resected lobe (vs. RUL)
RML	1.02	0.23–4.55	1.0
RLL	0.88	0.32–2.42	0.8
LUL	1.37	0.63–3.00	0.4
LLL	1.17	0.42–3.31	0.8
Thoracotomy (vs. MIS)	2.35	1.15–4.81	0.020	2.43	1.18–5.01	0.017
Histologic subtypes (vs. adenocarcinoma)
Squamous	2.15	1.0–4.6	0.049
Adenosquamous	2.7	0.65–11.18	0.17
Large	1.22	0.19–7.71	0.8
p-Stage (vs. I)
II	2.18	1.05–4.53	0.037	2.47	1.16–5.27	0.019
III	1.53	0.53–4.41	0.4	1.55	0.53–4.57	0.4
Adjuvant chemotherapy (vs. none)	0.94	0.39–2.30	0.18

Abbreviations: BMI, body mass index; CI, confidence interval; COPD, chronic obstructive pulmonary disease; CVD, cardiovascular disease; DLCO, diffusion capacity of the lungs for carbon monoxide; DM, diabetes mellitus; FEV1, forced expiratory volume in 1 second; LLL, left lower lobe; LUL, left upper lobe; RLL, right lower lobe; RML, right middle lobe; RUL, right upper lobe; ppo, predictive postoperative; p-Stage, pathologic stage; SHR, subhazard ratio