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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Drug Alcohol Depend. 2015 Oct 19;157:143–149. doi: 10.1016/j.drugalcdep.2015.10.018

Table 1.

Participant Characteristics

Total Sample Chronic Pain No Chronic Pain p-valuesa

(N=179) Total (N=75) Methadone (N=49) Buprenorphine (N=26) Total (N=104) Methadone (N=70) Buprenorphine (N=34) Pain OMTb
Age (yrs) 45.9 (10.3) 45.9 (10.4) 46.7 (11.3) 44.5 (8.7) 45.9 (10.1) 45.4 (10.2) 47.1 (10.0) 0.67 0.89
Male (%) 51.9 51.4 46.8 60.0 52.5 53.7 50.0 0.99 0.75
Caucasian (%) 43.3 44.6 47.9 38.5 41.4 42.4 39.4 0.78 0.52
Hispanic (%) 3.0 0.0 0.0 0.0 5.9 5.8 6.1 0.04 0.99
Never Married (%) 54.9 52.0 57.1 42.3 57.8 53.6 66.7 0.45 0.99
Employed (%) 17.2 20.0 16.3 26.9 14.4 11.4 20.6 0.57 0.32
Health Insurance (%) 89.0 93.3 91.1 96.2 84.7 84.2 85.3 0.87 0.02
HIV (%) 15.1 17.6 12.5 26.9 12.6 8.7 20.6 0.44 0.34
Hepatitis C (%) 44.0 47.3 52.1 38.5 40.6 41.8 38.2 0.39 0.03
Injection Drug User (%) 64.5 64.0 73.5 46.2 65.0 69.6 55.9 0.99 0.01
Duration in OMT (yrs) 5.2 (5.9) 4.8 (5.5) 5.5 (5.6) 3.5 (4.8) 5.6 (6.3) 6.2 (6.8) 4.2 (5.1) 0.47 0.03
SOWS Score (range 0–64) 14.8 (13.9) 16.08 (14.3) 16.6 (13.8) 15.1 (15.5) 13.4 (13.5) 15.1 (13.8) 9.9 (12.2) 0.19 0.14
SCL-10R Total Score (range 0–40) 10.1 (10.0) 10.9 (10.0) 11.2 (9.5) 10.9 (11.0) 9.2 (10.0) 9.9 (10.5) 7.9 (9.1) 0.19 0.49

Values represent Mean (Standard Deviation) unless otherwise noted.

a

Results based on Fisher’s exact tests for categorical variables and ANOVAs for continuous variables

b

OMT= opioid maintenance treatment type (methadone vs. buprenorphine)