Table 2.

Adjusted Lifetime Smokeless Tobacco Use^a O Rs and 95% CI According to Psychiatric Diagnosis and Tribe

	Basic modelb	Psychiatric comorbidity modelc	Psychiatric/alcohol comorbidity modeld
	OR (95% CI)	OwR (95% CI)	OR (95% CI)
Northern Plains tribe
Panic disorder	1.9 (0.8, 4.2)	1.6 (0.7, 3.8)	1.6 (0.7, 3.6)
Major depression	1.4 (0.9, 2.2)	1.2 (0.8, 2.0)	1.1 (0.7, 1.7)
PTSD	1.6* (1.1, 2.3)	1.5* (1.0, 2.2)	1.3 (0.9, 1.9)
Southwest tribe
Panic disorder	1.3 (0.7, 2.3)	1.2 (0.6, 2.1)	1.1 (0.6, 2.1)
Major depression	1.3 (0.9, 2.1)	1.3 (0.8, 2.0)	1.2 (0.8, 1.9)
PTSD	1.2 (0.8, 1.8)	1.2 (0.8, 1.7)	1.1 (0.7, 1.6)

Note. OR = odds ratio; CI = confidence interval; PTSD = posttraumatic stress disorder.

^aSmokeless tobacco users defined as individuals who have used smokeless tobacco for at least 1 year in their lifetime.

^bSociodemographic/health factors include age, sex, education, marital status, employment status, and smoking status.

^cAdjusted for sociodemographic/health factors and the two remaining lifetime psychological disorder diagnoses.

^dAdjusted for sociodemographics/health, other lifetime psychiatric diagnoses, and alcohol use disorder diagnosis.

*p < .05; **p < .01.