Table 3.

Multilevel analysis of variance (random effects) on UMAs among men and women aged 65 years or older in Norway (2009); municipality and hospital region levels

	Model 1		Model 2		Model 3		Model 4		Model 5		Model 6		Model 7
Random effects
Variance hospital region (SE)	0.007	(0.002)	0.008	(0.002)	0.008	(0.002)	0.008	(0.002)	0.008	(0.002)	0.008	(0.002)	0.008	(0.002)
MOR	1.08		1.09		1.09		1.09		1.09		1.09		1.09
Variance municipalities (SE)	0.01	(0.000)	0.007	(0.001)	0.007	(0.001)	0.007	(0.001)	0.007	(0.001)	0.007	(0.001)	0.007	(0.001)
MOR	1.13		1.1		1.1		1.12		1.12		1.12		1.12
Extrabinomial dispersion (SE)	1.190	(0.027)	1.204	(0.027)	1.204	(0.027)	1.204	(0.027)	1.204	(0.027)	1.204	(0.027)	1.159	(0.026)

Values are given as variances on the log odds scale with SEs in brackets and as MORs.

All variances were significant at p<0.05 (approximate Wald tests).

MORs, median ORs; UMAs, unplanned medical admissions.