Table 2.

Descriptive statistics of AQoL-8D scores; discrimination capacity of the items; and scores reliability for the dimensions, super dimensions, and the overall instrument

	Descriptive statistics		Discrimination capacity of items			Scores reliability
	Mean	SD	Mean item-total correlation	Min item-total correlation	Max item-total correlation	Cronbach’s alpha
Dimensions
Independent living	0.89	0.11	0.45	0.34	0.50	0.64
Pain	0.78	0.21	0.62	0.59	0.65	0.78
Senses	0.74	0.16	0.31	0.19	0.46	0.48
Mental health	0.58	0.11	0.48	0.35	0.62	0.77
Happiness	0.76	0.13	0.61	0.47	0.69	0.79
Coping	0.80	0.13	0.37	0.35	0.40	0.56
Relationships	0.73	0.14	0.45	0.31	0.59	0.74
Self-worth	0.81	0.13	0.49	0.45	0.53	0.67
Super dimensions
Physical	0.65	0.18	0.45	0.34	0.55	0.77
Psycho-social	0.38	0.16	0.54	0.29	0.70	0.92
Instrument
AQoL-8D UI	0.68	0.17	0.50	0.28	0.67	0.93