Health status in COPD cannot be measured by the St George's Respiratory Questionnaire alone: an evaluation of the underlying concepts of this questionnaire

Table 3 Correlations between the St George's Respiratory Questionnaire and the Nijmegen Integral Assessment Framework^#

	St George's Respiratory Questionnaire
	Symptoms	Activity	Impacts	Total
Nijmegen Integral Assessment Framework
Symptoms
Subjective Symptoms	0.70^¶	0.64	0.60	0.74^¶
Dyspnea Emotions	0.25	0.31	0.32	0.35
Dyspnea Expected	0.43	0.59	0.43	0.57
Fatigue	0.47	0.57	0.60	0.65
Functional Impairment
Actual Physical Activity	---	0.42	0.31	0.34
Behavioral Impairment	0.28	0.65	0.54	0.61
Subjective Impairment	0.67	0.70	0.71	0.81
Quality of Life
General Quality of Life	0.50	0.46	0.52	0.57
Health-related Quality of Life	0.43	0.42	0.46	0.51
Satisfaction Relations	0.24	---	---	0.21

^#only significant correlations (p < 0.01) are shown; ^¶Pearson's r ≥ 0.70 (criterion for conceptual similarity)

ISSN: 1465-993X