Table 2

Comparison of changes between baseline and each evaluation point in the two groups

	12 weeks		26 weeks		52 weeks
	Difference† (SE)	P value	Difference† (SE)	P value	Difference† (SE)	P value
6 min walking distance	22.5 (10.1)	0.029	31.7 (12.5)	0.013	20.7 (23.4)	0.38
Endurance time	344.1 (62.9)	<0.0001	271.0 (77.2)	0.0007	186.8 (77.9)	0.019
6 min walking distance, percentage of change	0.07 (0.02)	0.0068	0.08 (0.03)	0.0055	0.06 (0.05)	0.28
SGRQ total	−1.03 (2.34)	0.66	1.25 (2.74)	0.65	−0.20 (3.72)	0.96
SGRQ symptoms	−1.12 (3.43)	0.75	−0.71 (3.74)	0.85	−5.48 (4.34)	0.21
SGRQ activity	−1.86 (2.96)	0.53	0 (3.19)	1.00	0.52 (4.17)	0.90
SGRQ impact	−0.89 (2.8)	0.75	1.96 (3.33)	0.56	0.66 (4.31)	0.88
COPD assessment test	−1.36 (1.24)	0.28	−0.15 (1.54)	0.92	−0.97 (1.64)	0.55
Pedometer, step	274 (401)	0.50	546 (394)	0.17	540 (480)	0.26
Transitional Dyspnoea Index	2.32 (0.66)	0.0005	1.97 (0.66)	0.0035‡	1.46 (0.67)	0.032
Dyspnoea-12	−0.48 (1.01)	0.63	0.58 (1.16)	0.62	1.35 (1.51)	0.37
Hospital Anxiety and Depression Scale, Depression	0.03 (0.61)	0.96	−0.16 (0.60)	0.79	0.31 (0.65)	0.64
Hospital Anxiety and Depression Scale, Anxiety	0.41 (0.60)	0.50	−0.2 (0.67)	0.76	0.56 (0.74)	0.45
Saturation of percutaneous oxygen (SpO₂), stable	0.44 (0.30)	0.15	0.42 (0.34)	0.22	0.55 (0.47)	0.24
SpO₂, lowest	−0.64 (1.12)	0.57	−0.44 (1.07)	0.69	0.07 (1.20)	0.95
FVC	0.69 (1.64)	0.68	1.08 (1.65)	0.51	−1.61 (1.80)	0.37
DLCO	NA		NA		−1.09 (3.79)	0.77

Positive value indicates that the pulmonary rehabilitation group is better.
DLCO, diffuse capacity for carbon monoxide; FVC, forced vital capacity; NA, not applicable; SGRQ, St. George's Respiratory Questionnaire.