Table 1.

Pooled Mean Differences from Trials Included in Cochrane Review

CRQ	Point estimate (95% Confidence Interval)
Dyspnea	1.06 (0.85, 1.26)
Emotional Function	0.76 (0.52, 1.00)
Fatigue	0.92 (0.71, 1.13)
Mastery	0.97 (0.74, 1.20)
Overall	0.94 (0.57, 1.32)
SGRQ
Activities	-4.78 (-1.72, -7.83)
Impacts	-6.27 (-2.47, -10.08)
Symptoms	-4.68 (0.25, -9.61)
Overall	-6.11 (-3.24, -8.98)

Note: negative scores on the SGRQ indicate improvement