Table 3 Factors predicting pulmonary rehabilitation outcome in the cohort of patients with COPD

Dependent variable	Variable	β	SE	Exp (β) OR	96% CI	p Value
6MWD improvement	Charlson Index	−0.31	0.14	0.72	0.54 to 0.98	0.024
	Heart disease	0.86	0.11	2.36	1.85 to 3.01	0.001
	Metabolic disease	−0.55	0.07	0.57	0.49 to 0.67	0.001
MRC improvement	FEV₁	0.53	0.13	1.71	1.34 to 2.40	0.001
	Metabolic disease	0.16	0.09	1.17	0.93 to 1.77	0.104
	Skeletal disease	−0.36	0.20	0.69	0.66 to 1.48	0.074
SGRQ Improvement	Age	0.30	0.07	1.35	1.15 to 1.59	0.001
	Charlson Index	−0.66	0.14	0.51	0.38 to 0.68	0.001
	Heart disease	−0.38	0.10	0.67	0.55 to 0.83	0.001
	Metabolic disease	−0.09	0.07	0.91	0.77 to 1.07	0.249

For details of the included variables, see the results section.
6MWD, 6 min walking distance test; COPD, chronic obstructive pulmonary disease; FEV₁, forced expiratory volume in 1 s; MRC, Medical Research Council dyspnoea score; SGRQ, St George’s Respiratory Questionnaire total score.