Table 5.

Variance components of regional variables

Variance components	Proportion of regional variation
	Non-stratified model	German	French	Italian
pseudo R2	0.364	0.158	0.187	0.166
Region (ICC)a	0.394	0.280	0.194	0.277
No. of GP's/10'000 inhabitants	0.029	0.101	-b	-
No. of specialists/10'000 inhabitants	0.031	0.011	0.189	< 0.001
Hospital	0.044	0.016	0.302	-

^a intraclass correlation coefficient

^b negative variance components