Table 2.

Multivariable logistic regression models for the association between LAP and COPD.

OR (95%CI), P-value
	Model I	Model II	Model III
COPD
Ln LAP Continuous	1.38 (1.25, 1.53) <0.0001	1.22 (1.09, 1.37) 0.0005	1.16 (1.04, 1.30) 0.0089
Categories
Quartile1	Ref	Ref	Ref
Quartile2	1.40 (1.09, 1.82) 0.0096	1.05 (0.80, 1.37) 0.7268	1.12 (0.85, 1.47) 0.4252
Quartile3	1.65 (1.28, 2.12) <0.0001	1.19 (0.91, 1.54) 0.1996	1.17 (0.89, 1.53) 0.2571
Quartile4	2.02 (1.58, 2.57) <0.0001	1.46 (1.13, 1.88) 0.0035	1.35 (1.04, 1.75) 0.0234
P for trend	1.44 (1.27, 1.62) <0.0001	1.24 (1.09, 1.41) 0.0013	1.17 (1.02, 1.33) 0.0200