Table 3.

The Impact of Lung Function on All-Cause Mortality in the COPD and Non-COPD Population

Lung Function Indices		COPD			Non-COPD
		b	P	HR (95% CI)	b	P	HR (95% CI)
FEV1% predicteda	1	1.62	<0.001	5.07 (2.67, 9.61)	0.38	0.033	1.46 (1.03, 2.08)
	2	1.44	<0.001	4.21 (2.22, 7.99)	0.41	0.011	1.5 (1.1, 2.06)
	3	0.8	0.016	2.23 (1.16, 4.3)	0.18	0.236	1.2 (0.89, 1.61)
	4	1.08	<0.001	2.96 (1.57, 5.56)	Ref	Ref	1
	5	Ref	Ref	1	–	–	–
FVC% predictedb	1	0.93	<0.001	2.52 (1.55, 4.09)	0.44	0.014	1.56 (1.1, 2.22)
	2	0.72	0.003	2.06 (1.28, 3.32)	0.44	0.006	1.56 (1.14, 2.13)
	3	0.26	0.332	1.3 (0.77, 2.19)	0.32	0.039	1.37 (1.02, 1.86)
	4	Ref	Ref	1	Ref	Ref	1

Notes: ^aFEV₁% predicted in the COPD population: 1: < 60%, 2: 60% ~ 70%, 3: 70% ~ 80%, 4: 80% ~ 90%, 5: ≥ 90%; FEV₁% predicted in the non-COPD population: 1: < 80%, 2: 80% ~ 90%, 3: 90% ~ 100%, 4: ≥ 100%. ^bFVC% predicted in the COPD and non-COPD populations: 1: < 80%, 2: 80% ~ 90%, 3: 90% ~ 100%, 4: ≥ 100%.