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.