Table 3.

Independent predictors of brachial intima-media thickness in patients with COPD

Subject characteristics	β	Standardized β	P-value
Male sex	0.075	0.487	<0.001
Ln ADMA	0.084	0.311	0.011

Notes: Forward selection multiple linear regression including the following covariates: age, male sex, ln IL-6, ln ADMA, systolic blood pressure, FEV₁/FVC ratio, exacerbation rate, and ln pro-BNP. R²=0.402.

Abbreviations: COPD, chronic obstructive pulmonary disease; Ln, natural logarithm; IL-6, interleukin-6; ADMA, asymmetric dimethylarginine; FEV₁, forced expiratory volume in 1 s; FVC, forced vital capacity; Pro-BNP, pro b-type natriuretic peptide.