Six-Minute Walking Distance Improvement after Pulmonary Rehabilitation Is Associated with Baseline Lung Function in Complex COPD Patients: A Retrospective Study

Table 2

Odds ratios (95% confidence intervals) by regression logistic analysis of FEV₁ < 50% pred, TL, CO < 50% pred, RV > 160% pred, and PaO₂ < 70 mm Hg for COPD responder to PR.

	OR (95% CI)	P value
FEV1 < 50% pred	5.740 (1.782–18.491)	0.003
TL, CO < 50% pred	4.001 (1.151–13.906)	0.028
RV > 160% pred	2.255 (0.717–7.090)	0.164
PaO2 < 70 mm Hg	1.147 (0.383–3.439)	0.806