Table 3.

Descriptive and reliability statistics for the WHOQOL-BREF

	Descriptive statistics		Alpha coefficients
Domains	Number of items	All (n = 1164) Mean score (SD)*	Healthy individuals (n = 906)	Ill individuals (n = 258)
Physical health	7	14.3 (2.6)	0.70	0.74
Psychological health	6	13.4 (2.6)	0.73	0.70
Social relationships	3	13.9 (2.6)	0.55	0.61
Environmental health	8	12.3 (2.4)	0.84	0.72

* The higher score represents a better condition (scores range from 4 to 20).