Table 2 Health status outcomes of pulmonary rehabilitation

From: Health status instruments for patients with COPD in pulmonary rehabilitation: defining a minimal clinically important difference

Instrument

Baseline a

Change a

95% CI b

CCQ

   

 Symptoms

2.87±1.24

−0.59±1.16

−0.70 to −0.48

 Functional

2.86±1.34

−0.56±1.00

−0.65 to −0.46

 Mental

2.86±1.74

−0.62±1.49

−0.76 to −0.48

 Total

2.86±1.17

−0.58±0.92

−0.67 to −0.50

CAT

 Total

20.23±7.33

−3.11±5.59

−3.63 to −2.59

SGRQ

 Symptoms

63.66±21.77

−14.22±21.69

−16.24 to −12.21

 Activities

63.58±19.82

−6.71±13.44

−7.96 to −5.47

 Impact

39.21±18.81

−8.78±13.95

−10.08 to −7.49

 Total

50.69±17.33

−9.04±12.11

−10.17 to −7.92

6MWD

427.73±110.18

80.19±54.72

75.01–85.37

  1. N=451.
  2. Abbreviations: CAT, COPD Assessment Test; CCQ, Clinical COPD Questionnaire; COPD, chronic obstructive pulmonary disease; mMRC, modified Medical Research Council Dyspnoea Scale; SGRQ, St George’s Respiratory Questionnaire; 6MWD, 6-min walking distance; 95% CI, 95% confidence interval;.
  3. a Data were expressed as mean±s.d. Negative change represents improvement on the CCQ, CAT and SGRQ.
  4. b Paired t-tests were applied for the normally distributed data, Wilcoxon signed-rank tests for non-parametric data. All tests were significant with P<0.05 comparing pre- and post-pulmonary rehabilitation scores.
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