. Author manuscript; available in PMC: 2019 Nov 19.

Published in final edited form as: Eur J Cancer Prev. 2017 Jul;26(4):324–329. doi: 10.1097/CEJ.0000000000000264

Table 3.

Results from the Cox proportional hazard models on overall mortality and lung cancer-specific mortality (Italy, 2001–2011)

		Overall mortality		Lung cancer-specific mortality
	N	HR^a	95% CI	HR^a	95% CI
Male	5167	1.46	1.01–2.10	3.51	1.50–8.21
Age (years)
≥ 55 to ≤ 60	1727	1.42	0.88–2.28	1.12	0.47–2.66
> 60	3391	3.92	2.53–6.10	3.98	1.84–8.59
FEV1 (< 80%)	759	1.79	1.44–2.22	2.67	1.90–3.75
Pack-years
≥ 30 to < 40	1478	1.08	0.76–1.52	1.39	0.72–2.67
≥ 40	3743	1.31	1.01–1.70	1.74	1.04–2.90
LDCT group	3640	0.89	0.74–1.06	0.83	0.61–1.12

CI, confidence interval; FEV1, forced expiratory volume in 1 s; HR, hazard ratio; LDCT, low-dose computed tomography.

Model adjusted for study and mutually adjusted for all the covariates listed above.