. Author manuscript; available in PMC: 2011 Jul 1.

Published in final edited form as: J Affect Disord. 2009 Nov 18;124(1-2):98–107. doi: 10.1016/j.jad.2009.10.022

Table III. Comorbidities of Lifetime Suicide Attempts with Number of Lifetime DSM-IV Disorders in the Mexican National Comorbidity Survey (M-NCS).

	Response variable: Lifetime Attempt among part II sample=2362
	Bivariate model including main effects of number of disorders^a		Multivariate model including both main effects of number of other disorders and main effects of individual disorders (main effects of individual dx not shown).^a
	OR (95% CI)	χ ²	OR (95% CI)	χ ²

Exactly 1 Disorder	4.2^* (2.4–7.5)^*	25.9(<.001)^*
Exactly 2 Disorders	16.2^* (8.0–32.5)^*	63.7(<.001)^*	2.2 (0.8–6.2)	2.4(0.12)
Exactly 3 Disorders	22.5^* (13.1–38.7)^*	131.4(<.001)^*	1.2 (0.3–4.4)	0.0(0.83)
4 or more Disorders	39.3^* (21.0–73.6)^*	137.3(<.001)^*	0.4 (0.0–3.3)	0.8(0.37)
Overall Group Effect χ² for number of disorders^b	.^* (.-.)^*	187.9(<.001)^*	.^* (.-.)^*	20.0(<.001)^*

Abbreviations: OR, odds-ratio; CI, confidence interval.

P<.05, two-sided test.

Models are all in survival framework and all control for age, age-squared, sex, cohorts, and int categories. Int categories have cut-off points of 1–5,6–10,11–15,....70–75 up to largest int available in dataset. Multivariate models assessed in Part II sample; impulse disorders set to “No” in cases with age>44.

Group effect chisquare is for the multi-df tests to assess any difference between all the # of disorder dummies, while the individual chi-squares only tests yes vs no for each.