Table 2.

Multinomial logistic regression model of overdose (OD) history (n=4,571).

	Severe OD vs. No OD		Non-severe OD vs. No OD		Severe OD vs. Non-severe OD
	OR	95% CI	OR	95% CI	OR	95% CI
Female	0.74*	0.57, 0.97	0.81	0.62, 1.06	0.92	0.64, 1.32
African American (vs. all others)	0.38*	0.29, 0.50	0.66*	0.51, 0.85	0.57*	0.39, 0.82
Age (years)	1.02	1.01, 1.03	1.00	0.99, 1.01	1.02	1.00, 1.03
Health status: fair or poor	1.45*	1.11, 1.89	1.14	0.87, 1.50	1.30	0.91, 1.86
5+ drinks on one occasion, monthly or more	1.40*	1.26, 1.56	1.49*	1.33, 1.65	0.97	0.84, 1.12
Number of substances used (0 is referent)
1	1.84*	1.37, 2.49	2.07*	1.55, 2.76	0.92	0.62, 1.38
2	5.81*	3.67, 9.18	3.37*	1.99, 5.71	1.80	0.97, 3.37
3	8.39*	4.12, 17.1	4.49*	1.94, 10.4	1.70	0.68, 4.26
4 or more	25.1*	13.1, 48.4	13.8*	6.60, 29.0	1.87	0.93, 3.76

Note: generalized logistic model fitted because proportional odds assumption did not hold.

^*p < 0.05