Table 3.

Logistic Regression of Factors Associated with Inability to Access Treatment

Variable	Estimate	Standard Error	Odds Ratio	Confidence Interval
Previous drug treatment	1.50**	0.19	4.51	3.14 – 6.59
Days used amphetaminesad	0.04**	0.009
Traded sex for drugs	0.42*	0.16	1.53	1.10 – 2.10
Consider self to be homeless	0.54**	0.14	1.73	1.27 – 2.36
Nonplanning subscale of BISb	0.04*	0.01	1.19	1.06 – 1.36
Age at interviewc	−0.019*	0.007	0.91	0.85 – 0.97
Bisexual vs Heterosexual	0.43*	0.17	1.53	1.09 – 2.15
Gay vs Heterosexual	0.35	0.24	1.41	0.88 – 2.22
Lesbian vs Heterosexual	−0.19	0.50	0.82	0.27 – 2.03
Other vs Heterosexual	0.52	0.67	1.69	0.37 – 5.54
Days used cocainead	0.055*	0.02
Interaction of amphetamine x cocained	−0.002	0.001
Cocainea at amphetamine=5 days			1.24	1.04 – 1.46
Cocainea at amphetamine=10 days			1.162	0.99 – 1.36
Cocainea at amphetamine=15 days			1.09	0.91 – 1.29
Cocainea at amphetamine=20 days			1.02	0.81 – 1.26
Cocainea at amphetamine=25 days			0.96	0.72 – 1.28
Cocainea at amphetamine=30 days			0.90	0.63 – 1.24

Note. Hosmer-Lemeshow goodness of fit χ²(8) = 8.5574, p = .3810. AUC = .795. Odds ratio confidence intervals that do not include 1 are significant at p<.05.

^aEvery five days for last 30 days.

^bEvery five points.

^cEvery five years of age.

^dEffects used in interaction do not have odds ratios. Instead simple odds ratios are shown for the interaction.

^*p < .01,

^**p = .0001.