Table 2.

Odds Ratios by Tribe for Adjusted Lifetime Smoking Status^a, 1997–1999

	Basic modelb	Psychiatric comorbidity modelc	Psychiatric/alcohol comorbidity modeld
	OR (95% CI)	OR (95% CI)	OR (95% CI)
Northern plains tribe
Panic disorder	1.6 (1.0, 2.7)	1.5 (0.9, 2.6)	1.3 (0.8, 2.2)
Posttraumatic stress disorder	1.4 (1.0, 2.1)	1.4 (0.9, 2.0)	1.1 (0.8, 1.7)
Major depression	0.8 (0.4, 1.8)	0.7 (0.3, 1.6)	0.6 (0.3, 1.5)
Southwest tribe
Panic disorder	2.0 (1.3, 2.9)*	1.6 (1.1, 2.5)	1.5 (1.0, 2.3)
Posttraumatic stress disorder	1.7 (1.2, 2.3)**	1.4 (1.0, 2.0)	1.2 (0.8, 1.7)
Major depression	2.1 (1.1, 3.8)**	1.6 (0.8, 3.1)*	1.5 (0.8, 2.9)

CI = confidence interval; OR = odds ratio.

^aLifetime smokers are defined as individuals who have smoked at least 100 cigarettes (five packs) in their lifetime.

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

^cAdjusted for sociodemographic factors and the two remaining lifetime psychiatric diagnoses.

^dAdjusted for sociodemographic factors, other lifetime psychiatric diagnoses, and alcohol use disorder diagnosis.

*P < .05; **P < .01.