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Table 4 Cross sectional validity (n = 111)

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

Instrument

SGRQ

   
 

Total

Symptoms

Activity

Impacts

CCQ

    

Total

0.88

0.77

0.79

0.82

Symptoms

0.77

0.80

0.63

0.70

Functional state

0.82

0.62

0.84

0.73

Mental state

0.64

0.55

0.50

0.63

  1. All correlations significant at the 0.05 level (2-tailed) if not otherwise stated. Summary of sum score correlation coefficents calculated between all domains in both instruments. Calculations based on data from the second visit.
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Health and Quality of Life Outcomes

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