Table 4.

Item convergent and discriminant validity and internal reliability

Scale	No. of items / scale	Item convergent validitya	Item discriminant validityb	Cronbach’s alpha
Mobility	2	0.85, 0.87	0.32–0.51	0.77
Self-care	2	0.88, 0.95	0.28–0.50	0.84
Household	2	0.79, 0.89	0.33–0.54	0.63
Cognitive	2	0.83, 0.86	0.38–0.56	0.67
Social	2	0.88, 0.88	0.29–0.60	0.71
Society	2	0.86, 0.87	0.26–0.62	0.67
WHODAS-2.0	12			0.89

a Correlations with own scale.

b Correlations with other scales (range of correlations)