Criminal charges prior to and after initiation of office-based buprenorphine treatment

Table 3 Multivariate analysis of factors associated with criminal charges in the 2 years after initiation of office-based buprenorphine treatment

Factor	Adjusted Odds Ratio (95% confidence interval)	P value^a
Recent charges (past 2 years)	3.893 (2.216-6.839)	< 0.001
Recent opioid maintenance	0.515 (0.265-0.998)	0.049
≥ 6 months opioid negative	0.597 (0.335-1.063)	0.080
Heroin abuse	2.479 (0.897-6.994)	0.086
Cocaine abuse	1.459 (0.804-2.648)	0.214
Injection drug use	1.186 (0.618-2.275)	0.609

The following factors were not included in the multivariate analysis due to a high correlation with another factor (indicated in parenthesis): any prior charges (recent charges), remaining in treatment at 12 months (≥ 6 months opioid negative), prescription opioid abuse (heroin abuse), hepatitis C (injection drug use).
^a P values calculated by Wald chi-square tests in a logistic regression model; degrees of freedom = 1 for each

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