Table 3.

Baseline and two months six minutes walk distance of the two studied groups of COPD patients

Outcome measure	Group 1 (Rehabilitation group) N = 25		Group 2 (Usual care control group) N = 14		Mean differences between groups (95% CI)	P value
	Enroll	2 months	Enroll	2 months
Six minutes walk distance in meters
Mean ± SD	88.79 ± 19.14	141.71 ± 23.11	83.79 ± 15.9	68.56 ± 32.11	58.15 ± 11.23	< 0.001#
Chronic respiratory disease questionnaire$
Dyspnea (range 5-35)	11.8 ± 5.0	19.6 ± 5.2*	12.4 ± 4.4	13.5 ± 4.3	5.5 (3.0-9.0)	0.003^
Fatigue (range 4-28)	9.8 ± 2.8	17.4 ± 5.4*	11.6 ± 6.1	13.2 ± 5.1	5.3 (1.9-9.8)	0.004^
Emotion (range 7-49)	22.1 ± 5.8	33.5 ± 7.2*	27.0 ± 12.6	29.7 ± 11.4	8.7 (2.5-15.0)	0.008^
Short form 36 (range 0-100)$
Physical component	30.6 ± 14.2	56.3 ± 24.0*	40.6 ± 21.9	47.2 ± 24.2	20.1 (3.3-36.8)	0.02§
Mental component	26.3 ± 14.6	39.0 ± 20.0*	30.4 ± 19.9	32.4 ± 22.2	10.6 (-0.3-21.6)	0.047§
Pulmonary function tests (spirometry)
FVC (L/min)	1.37 ± 0.50	1.42 ± 0.59	1.09 ± 0.41	0.98 ± 0.20	0.44 (0.11-0.77)	0.01^
FVC (% pred)	36.24 ± 14.17	40.4 ± 16.16	29.0 ± 10.91	26.57 ± 7.13	13.83 (2.5-14.9)	0.00^
FEV1 (L/min)	0.80 ± 0.35	0.83 ± 0.52	0.62 ± 0.18	0.64 ± 0.20	0.19 (-0.1-0.48)	0.2§§
FEV1 (%pred)	29.44 ± 13.14	29.92 ± 20.21	23.21 ± 7.70	23.14 ± 7.56	6.78 (-5.01-18.57)	0.25§§

#Data expressed as mean score (SD);

^$Increased score denotes improvement; P < 0.05 between baseline and two months in rehabilitation group using paired t test;

^#P < 0.001 between group 1 and group 2 after two months of enrolment using unpaired t tests;

^{^}P < 0.01 between group 1 and 2 after two months of enrolment using unpaired t tests;

^*P < 0.05 enroll vs 2 months in group two using paired t tests;

^§P < 0.05 between group 1 and 2 after twomonths of enrolment using unpaired t tests;

^§§P > 0.05 between group1 and 2 after two months of enrolment using unpaired t tests, COPD = Chronic obstructive pulmonary disease