TABLE 7.

Bivariate logistic analyses of the PMA and the PMT for predicting 6MWD< 350 m and respiratory failure.

	PMA			PMT
	Odds ratio	95% CI	p value	Odds ratio	95% CI	p value
6MWD<350 m (stable COPD)	1.263	1.072 to 1.487	0.005**	1.066	0.989 to 1.149	0.093
Respiratory failure (AECOPD)	1.141	1.002 to 1.299	0.047*	1.178	1.088 to 1.276	< 0.001***

PMA, pectoralis muscle cross-sectional area; PMT, pectoralis muscle attenuation; 6MWD, 6-minute-walk distance; AE, acute exacerbation; 6MWD, 6-minute walk distance; COPD, chronic obstructive lung disease. ***p < 0.001, *p < 0.05.