Correlation between self-management, psychological cognitive impairment, and quality of life in elderly chronic obstructive pulmonary disease patients

Table 3 Total scores and scores for each dimension of quality of life in elderly chronic obstructive pulmonary disease patients (n = 312)

Dimension	Minimum value	Maximum value	Median (P25, P75)
Total score of quality of life	8	38	24.00 (19.00, 28.00)
Degree of breathlessness when climbing stairs	1	5	5.00 (3.00, 5.00)
Tolerance for daily household activities	0	5	3.00 (3.00, 5.00)
Confidence level in outdoor activities	0	5	3.00 (3.00, 5.00)
Vitality	0	5	3.00 (3.00, 3.00)
Severity of coughing	0	5	3.00 (2.25, 3.00)
Total amount of phlegm coughed up	0	5	3.00 (2.00, 3.00)
Sleep condition	0	5	1.00 (0.00, 5.00)
Degree of chest tightness	0	4	0.00 (0.00, 2.00)