Health-related quality of life in chronic obstructive pulmonary disease patients in Korea

Table 4 HRQoL scores according to the severity of breathlessness

	Level 1, n = 146		Level 2, n = 45		Level 3, n = 7		P trend^*
EQ-5D index	0.87	(0.02)	0.74	(0.03)	0.54	(0.06)	<0.0001
EQ-VAS	75.07	(2.63)	65.64	(3.46)	52.57	(7.11)	<0.0001
CCQ total score	0.82	(0.12)	1.89	(0.16)	3.36	(0.16)	<0.0001
CCQ domain score
Symptoms	1.14	(0.13)	1.97	(0.17)	3.56	(0.36)	<0.0001
Function	0.58	(0.14)	1.96	(0.19)	3.08	(0.39)	<0.0001
Mental	0.65	(0.19)	1.59	(0.25)	3.53	(0.52)	<0.0001

Level 1, short of breath during strenuous activities; level 2, stopping to catch breath after a few minutes walking; level 3, breathless when dressing or washing.
All scores [adjusted mean values (SE)] were adjusted by age group, level of education, gender, and smoking status. SE, standard error of the mean.
^*The P –trend value tests the null hypothesis that there is no linear trend between the HRQoL scores and severity of breathlessness order.

ISSN: 1477-7525