Table 1.

Characteristics of all people who were prescribed methadone during incarceration (N = 982).

Variables	Frequency	%
Age at methadone initiation (years), mean (±SD)	34.9 (±7.6)
Male	945	96.2
Duration of incarceration (months), mean (±SD)	44.1 (±29.3)
Methadone start dose in prison
Low (≤40 mg)	848	86.4
Medium (>40–85 mg)	117	11.9
High (>85 mg)	17	1.7
Maximum methadone dose in prison
Low (≤40 mg)	259	26.4
Medium (>40–85 mg)	456	46.4
High (>85 mg)	267	27.2
Last methadone dose in prison (n = 975)
Low (≤40 mg)	582	59.7
Medium (>40–85 mg)	290	29.7
High (>85 mg)	103	10.6
Duration on methadone in prison (months), mean (±SD)	12.5 (± 17.4)