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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: JAMA Intern Med. 2014 Nov 1;174(11):1736–1745. doi: 10.1001/jamainternmed.2014.4052

Table 1.

Baseline Characteristics by Treatment Arm

Demographic BI-B
(N=427)
MSO
(N=431)
SAR
(N=427)
Total
(N=1285)
Gender
 Male 301 (70%) 309 (72%) 288 (67%) 898 (70%)
 Female 126 (30%) 122 (28%) 139 (33%) 387 (30%)
Age (Mean(Std)) 36 (12) 36 (11) 36 (12) 36 (12)
Ethnicity
 Hispanic or Latino 100 (23%) 106 (25%) 99 (23%) 305 (24%)
 Not Hispanic or Latino 324 (76%) 322 (75%) 325 (76%) 971 (76%)
 Chose not to answer 3 (1%) 3 (1%) 3 (1%) 9 (1%)
Race
 American Indian or Alaska
Native
10 (2%) 4 (1%) 10 (2%) 24 (2%)
 Asian 3 (1%) 2 (0%) 3 (1%) 8 (1%)
 Black or African American 144 (34%) 142 (33%) 154 (36%) 440 (34%)
 Native Hawaiian or Pacific
Islander
2 (0%) 2 (0%) 1 (0%) 5 (0%)
 White 207 (48%) 224 (52%) 210 (49%) 641 (50%)
 Other 23 (5%) 26 (6%) 17 (4%) 66 (5%)
 Multiracial 20 (5%) 22 (5%) 21 (5%) 63 (5%)
 Unknown 7 (2%) 2 (0%) 6 (1%) 15 (1%)
 Chose not to answer 11 (3%) 7 (2%) 5 (1%) 23 (2%)
Education Completed
 1-11 Years 133 (31%) 147 (34%) 128 (30%) 408 (32%)
 GED/12 Years 136 (32%) 142 (33%) 139 (33%) 417 (32%)
 Some College 110 (26%) 113 (26%) 115 (27%) 338 (26%)
 College Degree 36 (8%) 24 (6%) 34 (8%) 94 (7%)
 Some Graduate 7 (2%) 2 (0%) 1 (0%) 10 (1%)
 Graduate Degree 3 (1%) 3 (1%) 10 (2%) 16 (1%)
 Post Graduate Degree 2 (0%) 0 (0%) 0 (0%) 2 (0%)
Marital Status
 Married 41 (10%) 36 (8%) 45 (11%) 122 (9%)
 Remarried 0 (0%) 1 (0%) 0 (0%) 1 (0%)
 Widowed 9 (2%) 9 (2%) 9 (2%) 27 (2%)
 Separated 26 (6%) 39 (9%) 21 (5%) 86 (7%)
 Divorced 61 (14%) 46 (11%) 51 (12%) 158 (12%)
 Never Married 250 (59%) 260 (60%) 266 (62%) 776 (60%)
 Cohabiting, not married 40 (9%) 40 (9%) 35 (8%) 115 (9%)
Employment in Past 3 Years
 Full time 151 (35%) 121 (28%) 129 (30%) 401 (31%)
 Part time (regular hrs) 36 (8%) 47 (11%) 35 (8%) 118 (9%)
 Part-time (irreg.) 66 (15%) 72 (17%) 62 (15%) 200 (16%)
 Student 27 (6%) 23 (5%) 28 (7%) 78 (6%)
 In controlled
environment
6 (1%) 5 (1%) 3 (1%) 14 (1%)
 Retired/Disability 54 (13%) 42 (10%) 55 (13%) 151 (12%)
 Service 0 (0%) 0 (0%) 0 (0%) 0 (0%)
 Homemaker 5 (1%) 7 (2%) 2 (0%) 14 (1%)
 Unemployed 82 (19%) 114 (26%) 113 (26%) 309 (24%)
Employment in Past 30 Days
 Full-time 101 (24%) 75 (17%) 68 (16%) 244 (19%)
 Part-time (regular hrs.) 24 (6%) 35 (8%) 30 (7%) 89 (7%)
 Part-time (irreg.) 41 (10%) 41 (10%) 38 (9%) 120 (9%)
 Student 28 (7%) 26 (6%) 30 (7%) 84 (7%)
 In controlled
environment
1 (0%) 1 (0%) 1 (0%) 3 (0%)
 Retired/Disability 68 (16%) 58 (13%) 61 (14%) 187 (15%)
 Service 0 (0%) 0 (0%) 0 (0%) 0 (0%)
 Homemaker 5 (1%) 5 (1%) 2 (0%) 12 (1%)
 Unemployed 159 (37%) 190 (44%) 197 (46%) 546 (42%)
Annual Household Income
 $0-$15,000 269 (63%) 273 (63%) 262 (61%) 804 (63%)
 $15,001-$30,000 61 (14%) 65 (15%) 54 (13%) 180 (14%)
 $30,001-$50,000 31 (7%) 23 (5%) 26 (6%) 80 (6%)
 $50,001-$75,000 9 (2%) 8 (2%) 19 (4%) 36 (3%)
 $75,001-$100,000 6 (1%) 5 (1%) 11 (3%) 22 (2%)
 More than $100,000 5 (1%) 6 (1%) 2 (0%) 13 (1%)
 Declined to answer 46 (11%) 51 (12%) 53 (12%) 150 (12%)
Primary substance
 Cannabis 186 (44%) 196 (45%) 185 (43%) 567 (44%)
 Cocaine 113 (26%) 120 (28%) 116 (27%) 349 (27%)
 “Street” opioids 75 (18%) 64 (15%) 79 (19%) 218 (17%)
 Prescription opioids 23 (5%) 24 (6%) 22 (5%) 69 (5%)
 Methamphetamine 16 (4%) 18 (4%) 15 (4%) 49 (4%)
 Sedatives of sleeping pills 9 (2%) 5 (1%) 6 (1%) 20 (2%)
 Hallucinogens 4 (1%) 2 (0%) 3 (1%) 9 (1%)
 Prescription stimulants 0 (0%) 2 (0%) 1 (0%) 3 (0%)
DAST-10 score 5.76 (2.26) 5.77 (2.34) 5.89 (2.25) 5.81 (2.28)
AUDIT-C score 5.54 (3.72) 5.31 (3.86) 5.45 (3.83) 5.43 (3.81)
Days of use of primary
drug *
15.7 (11.5) 15.6 (11.7) 17.4 (11.6) 16.2 (11.6)
*

p = .042