Table 5. Survival models of the associations between number of prior DSM-IV disorders and a subsequent suicide attempt—developing countries.

	Response Variable: Lifetime Attempt among Part II Sample (n = 26,959)
	Bivariate Modelsa	Multivariate Interactive Modelb
Number of DSM-IV Disorders	OR (95% CI)	OR (95% CI)
Exactly 1	3.5 (2.9–4.2)*	—
Exactly 2	6.8 (5.2–8.8)*	0.7 (0.5–1.0)
Exactly 3	9.4 (6.9–12.9)*	0.3 (0.2–0.6)*
Exactly 4	16.8 (11.2–25.2)*	0.2 (0.1–0.4)*
Exactly 5	19.6 (11.7–33.0)*	0.1 (0.0–0.2)*
≥6	32.1 (19.3–53.4)*	0.0 (0.0–0.0)*
χ2 (p-value)c	579.0 (<0.001)*	50.9 (<0.001)*

^aBivariate discrete time survival models include the following covariates: age, age-squared, age cohort, sex, and person-year.

^bMultivariate interactive model (includes number of disorders and individual DSM-IV/CIDI disorders together in a discrete time survival model) includes the following covariates: age, age-squared, age cohorts, sex, and person-year.

^cThe group effect χ² tests the set of coefficients for number of disorders for significance, while the individual χ² only test presence versus absence of each specific number of disorders.

*: Significant at the 0.05 level, two-sided test. CI, confidence interval.