Table 2:

multivariable analyses for model all cause, COPD and pneumonia admissions.

Multivariable	All-cause hospital admission		COPD		Pneumonia
	HR (95% CI)	P Value	HR (95% CI)	P Value	HR (95% CI)	P Value
CAC Extent	1.12 (1.06–1.18)	<0.001	1.19 (1.01–1.41)	0.036	1.26 (1.08–1.48)	0.004
None	Reference		Reference		Reference
Mild	1.21 (1.02–1.44)	0.032	2.30 1.31–4.03)	0.004	1.48 (0.88–2.47)	0.140
Moderate	1.11 (0.92–1.34)	0.263	2.17 (1.20–3.91)	0.010	1.54 (0.90–2.64)	0.111
Marked	1.48 (1.23–1.78)	<0.001	2.27 (1.24–4.15)	0.008	2.19 (1.30–3.71)	0.003

adjusted for age, sex, race, BMI, current smoking status, pack years of smoking, emphysema severity and NCCN group.