Table 3

Correlations between CCQ with SF-36 in healthy (ex)smokers and patients at risk for/with COPD (n = 49)

Clinical COPD Questionnaire

Symptom
 Functional state
 Mental state
 Total
SF-36



     Physical functioning
 -0.54**
 -0.70**
 -0.65 **
 -0.69**
     Social functioning
 -0.45**
 -0.49**
 -0.34*
 -0.49**
     Role physical
 -0.46**
 -0.52**
 -0.47**
 -0.53**
     Role emotional
 -0.45**
 -0.50**
 -0.36*
 -0.48**
     Mental health
 -0.40**
 -0.48**
 -0.34*
 -0.49**
     Vitality
 -0.52**
 -0.55**
 -0.27
 -0.58**
     Pain
 -0.22
 -0.26
 -0.17
 -0.26
     Health perceptions
 -0.49**
 -0.54**
 -0.40**
 -0.56**

SF-36 = Medical Outcome Survey Short Form-36 (higher score indicates better health status); * P < 0.05; ** P < 0.01, Spearman's rank correlation.

van der Molen et al. Health and Quality of Life Outcomes 2003 1:13   doi:10.1186/1477-7525-1-13