Has the association between low school performance and the risk of disability benefit due to mental disorders become stronger over time?

Table 3 Interaction effects between graduation cohort and school performance at the time of leaving compulsory school on risk of disability benefits due to mental disorders during follow-up 2003–2011

	Model 1		Model 1a		Model 2		Model 2a
	HR^b	95%CI	HR^b	95%CI	HR^b	95%CI	HR^b	95%CI
Graduation cohort * school performance (higher school performance^a as a reference)	1.11	1.07–1.15	1.09	1.05–1.13	1.12	1.08–1.16	1.10	1.06–1.14

^a merit rating above the lowest quintile
^b hazard ratio
Model 1poor school performance defined as the lowest quintile of merit rating (calculated on the basis of at least 8 school subjects) or ≥ 9 incomplete courses at the time of leaving compulsory school
Model 1a adjusted for mental disorders before finishing ninth grade
Model 2 individuals who had ≥9 incomplete courses excluded (n = 8589)
Model 2a adjusted for mental disorders before finishing ninth grade
*Interaction between two variables

ISSN: 1471-2458