Characteristic | Control | Contingency Management (CM) | ||
---|---|---|---|---|
n/N or median or utility score | %, SD, or IQR | n/N or median or utility score | %, SD, or IQR | |
Male | 240/273 | 88 | 238/278 | 86 |
Age mean (SD) | 25 | (4) | 24 | (4) |
Ethnicity | ||||
 White | 144/273 | 53 | 148/277 | 53 |
 Black | 62/273 | 23 | 65/277 | 23 |
 Asian | 30/273 | 11 | 29/277 | 10 |
 Other | 37/273 | 14 | 35/277 | 13 |
Marital status | ||||
 Single | 253/273 | 93 | 259/278 | 93 |
 Married or cohabiting | 14/273 | 5 | 17/278 | 6 |
 Other | 6/273 | 2 | 2/278 | 1 |
Educational attainment | ||||
 No qualifications | 48/273 | 18 | 43/277 | 16 |
 GCSE or equivalent | 104/273 | 38 | 133/277 | 48 |
 A level or equivalent | 67/273 | 25 | 58/277 | 21 |
 Post 18 education (including HND, trade, degree) | 54/273 | 20 | 43/277 | 16 |
 Ever had open market employment | 223/273 | 82 | 240/278 | 86 |
 Any current work or study | 67/273 | 25 | 73/278 | 26 |
Diagnosis | ||||
 Schizophrenia or schizo-affective disorder | 80/256 | 31 | 90/268 | 34 |
 Bipolar affective disorder | 26/256 | 10 | 19/268 | 7 |
 Depression with psychotic symptoms | 11/256 | 4 | 5/268 | 2 |
 Other psychosis | 139/256 | 54 | 154/268 | 57 |
Cannabis use | ||||
 1–3 times a week | 77/273 | 28 | 78/278 | 28 |
 More than 3 times a week | 196/273 | 72 | 200/278 | 72 |
 Any work or study | 58/183 | 32 | 58/189 | 31 |
 Cannabis-positive urine | 210/262 | 80 | 214/272 | 79 |
 Number of days using cannabis* | 108 | (67, 156) | 114 | (70, 162) |
 History of cannabis dependence | 238/273 | 87 | 236/278 | 85 |
 Current cannabis dependence | 183/238 | 77 | 185/236 | 78 |
 PANSS positive symptoms median (IQR) | 12 | (9, 17) | 13 | (9, 16) |
 PANSS negative symptoms median (IQR) | 14 | (11, 19) | 14 | (10, 19) |
EQ-5D-3L utility score | 0.7619 | Â | 0.7652 | Â |
SF-6D utility score | 0.6789 | Â | 0.6833 | Â |