The validity of the EQ-5D-3L items: an investigation with type 2 diabetes patients from six European countries

Table 3 Model fits for data from all six study countries ^a

	Mobility	Self-care	Usual activities	Pain/Discomfort	Anxiety/Depression
Age	0.13; 0.15	0.14; n.d.^b	0.10; 0.12	0.07; 0.09	0.26; 0.27
Gender	0.07; 0.08^*	0.10; 0.11	0.07; 0.08	0.09; 0.10	0.27; 0.27
Education	0.04; 0.04	0.10; 0.10	0.06; 0.06	0.05; 0.06	0.27; 0.27
Previous stroke	0.07; n.d.^b	0.13; 0.13	0.11; n.d.^b	0.05; n.d.^b	0.27; 0.27
Problems with heart	0.08; 0.09	0.13; 0.14	0.09; 0.09	0.06; 0.07^*	0.26; 0.26
Problems with lower extremities	0.16; 0.17	0.19; 0.19	0.14; 0.14	0.12; 0.13	0.29; 0.29
Problems with eyes	0.09; 0.09	0.15; 0.16^*	0.08; 0.09	0.08; 0.08	0.27; 0.28

^aFirst number in each cell is Nagelkerke’s R² for the model without interaction terms, the second number is Nagelkerke’s R² for the model with interaction terms. Asterisks behind the second number symbolise the results of the test as to whether the second model explains the dependent variable significantly better than the first. ^* = ‘p < 0.05’.
^bn.d. means not determinable.

ISSN: 1477-7525