Insomnia, psychiatric disorders and suicidal ideation in a National Representative Sample of active Canadian Forces members

Table 3 Stepwise multivariate logistic regression model examining past-year mental health status as an effect modifier of the association between insomnia and past-year suicide ideation

	Adjusted OR (95% CI)
Model 1
Insomnia	1.34 (1.18–1.52)**
Past-year mental health status
No mental health disorder ^(Ref)	1.00
1 mental health disorder	9.82 (6.55–14.71)**
2 or more mental health disorders	22.40 (14.23–35.25)**
Model 2
Insomnia*past-year mental health status
	Adjusted OR (95% CI)
Insomnia x No mental health disorder	1.61 (1.37–1.89)*
Insomnia × 1 mental health disorder	1.39 (1.12–1.73)*
Insomnia × 2 or more mental health disorders	1.04 (0.81–1.33)
	Adjusted ratio of OR (95% CI)
Insomnia × 1 mental disorder vs Insomnia x No mental health disorder	1.16 (0.88–1.52)
Insomnia × 2 mental disorder vs Insomnia x No mental health disorder	1.55 (1.15–2.07)*
Insomnia × 2 mental disorder vs Insomnia × 1 mental health disorder	1.34 (0.97–1.85)

Model 1: Adjusted logistic regressions adjusted for marital status with sleep disturbances and past-year mental health status entered in the same model
Model 2: Same variables as model 1 with the addition of the interaction between sleep disturbances and past-year mental health status
^(Ref) Reference category
*Significantly different from reference at p < .01
**Significantly different from reference at p < .00

ISSN: 1471-244X