Validation of the Clinical COPD Questionnaire (CCQ) in primary care

Table 5 Longitudinal Validity (n = 111)

Instrument	SGRQ Total	Symptoms	Impacts	Activity
CCQ
Total	0.52	0.40	0.38	0.31
Symptoms	0.46	0.36	0.36	0.26
Functional
State	0.44	0.27	0.31	0.33
Mental State	0.30	0.17 n.s	0.18 n.s	0.22

All correlations are significant at the 0.05 level (2-tailed) if not otherwise stated. Summary of change score correlation coefficients calculated between all domains in both instruments. Calculations based on data from both visits from the entire study sample with clinical COPD. SGRQ = St Georges Respiratory Questionnaire, CCQ = Clinical COPD Questionnaire.

ISSN: 1477-7525