Table 2.
Subgroup analysis of baseline characteristics of young people in residential substance use disorder treatment (Cohort B) 2018–2020: Lost to 12-month follow-up vs. 12-month follow-up completers
| Characteristic | Lost to 12-month follow-up | Completed 12-month follow-up | p | d |
|---|---|---|---|---|
| Age (M, SD)a | 20.7 (2.0) | 20.5 (1.8) | .781 | |
| Gender (n, % male)a | 55 (72.4) | 19 (79.2) | .508 | |
| Education (completed school years; M, SD)a | 10.6 (1.0) | 10.2 (1.4) | .117 | |
| Completed further study (n, %)# | 1.0 | |||
| Technical/Trade Certificate | 14 (93.3) | 4 (100.0) | ||
| Bachelor-level College | 1 (6.7) | 0 (0) | ||
| Employment status (n, %)a | .374 | |||
| Unemployed | 49 (64.5) | 17 (70.8) | ||
| Full- or part-time employment | 22 (28.9) | 4 (16.7) | ||
| Receiving pension or allowance | 5 (6.6) | 3 (12.5) | ||
| Accommodation (n, %)a | .777 | |||
| (Residing with) rental tenant/home owner | 62 (81.6) | 18 (75.0) | ||
| Homeless | 9 (11.8) | 4 (16.7) | ||
| Inpatient, forensic setting, hostel, other | 5 (6.6) | 2 (8.3) | ||
| Relationship status (n, % single)a | 60 (78.9) | 18 (75.0) | .684 | |
| Primary problematic substance (n, %)b | .787 | |||
| Cannabis | 26 (34.7) | 12 (52.2) | ||
| Amphetamine-type stimulants | 26 (34.7) | 5 (21.7) | ||
| Alcohol | 11 (14.7) | 4 (17.4) | ||
| Cocaine | 4 (5.3) | 0 | ||
| Sedatives | 3 (4.0) | 1 (4.3) | ||
| Heroin | 2 (2.7) | 1 (4.3) | ||
| Hallucinogens | 1 (1.3) | 0 | ||
| Steroids | 1 (1.3) | 0 | ||
| Nicotine | 1 (1.3) | 0 | ||
| Injected during last 3 months (n, %)c# | 4 (7.0) | 1 (5.9) | 1.0 | |
| Overdosed (any drug) last 3 months (n, %)c# | 15 (26.3) | 6 (35.3) | .544 | |
| Arrested in the last 3 months (n, %)c# | 10 (17.5) | 3 (17.6) | 1.0 | |
| Brief Symptom Inventory (M, SD)d | ||||
| Global Severity Index | 66.7 (12.4) | 71.4 (9.7) | .125 | |
| Positive Symptoms Distress Index | 63.0 (8.8) | 67.5 (10.2) | .059 | |
| Positive Symptoms Total | 64.3 (10.1) | 68.3 (8.8) | .118 | |
| Somatisation | 60.4 (12.1) | 67.3 (9.0) | .022* | 0.65 |
| Obsessive Compulsive | 67.1 (10.2) | 71.6 (8.7) | .083 | |
| Interpersonal Sensitivity | 61.4 (12.8) | 66.8 (13.1) | .110 | |
| Depression | 65.0 (11.1) | 68.6 (11.6) | .216 | |
| Anxiety | 65.3 (12.3) | 69.6 (9.5) | .161 | |
| Hostility | 59.2 (10.6) | 61.6 (12.6) | .416 | |
| Phobic Anxiety | 62.6 (10.7) | 67.4 (9.9) | .081 | |
| Paranoid Ideation | 62.6 (12.0) | 65.7 (11.1) | .310 | |
| Psychoticism | 68.3 (10.9) | 71.4 (10.1) | .270 | |
| Brief Situational Confidence Questionnaire (M, SD)e | 45.9 (25.2) | 42.2 (24.1) | .573 | |
| Severity of Dependence Scale (M, SD)f | 9.1 (3.1) | 10.4 (2.7) | .127 | |
| World Health Organisation Quality of Life-8 (M, SD)g | 3.3 (0.7) | 2.8 (0.9) | .007** | 0.62 |
alost n = 76; completed n = 24
blost n = 75; completed n = 23
clost n = 57; completed n = 17
dlost n = 58; completed n = 20
elost n = 58; completed n = 19
flost n = 57; completed n = 19
glost n = 60; completed n = 19
# = fisher’s exact test
* p < .05. ** p < .01. *** p < .001