Page 86 - Age of onset of disruptive behavior of residentially treated adolescents -Sjoukje de Boer

Results
Table 1 shows the pre-treatment client characteristics previously found to associate with dropout. Almost one third of the participants ended treatment prematurely (34.4%). The dropouts were significantly more often male than the completers. With regard to the pre-treatment characteristics on the types and onset of the disruptive behaviour (see Table 2), cannabis usage prior to admission was more common within the dropout group (77.9%) compared to the completer group (57.8%).
Table 1
Pre-treatment client characteristics by discharge status
Total Dropout Completer Completer
(n=224) (n=77) (n=147) vs dropout
N1 n(%)/M(SD) n(%)/M(SD) n(%)/M(SD) p-value
Sex (male) 224 Age at admission (years) 224 Minority status (ethnicity non-Dutch) 224 Intellectual ability (IQ) 163 Academic functioning 219
Not attending school
Special education
Pre-vocational/junior general secondary Senior general secondary/pre-university
Referral 224 Youth welfare institution
Youth mental healthcare institution
Judicial institution
Number of diagnoses 221 Diagnosed with externalising disorder 221 YSR total score (T-score) 214 YSR externalising score (T-score) 214 YSR social problem score (T-score) 214
172 (76.8%) 17.7 (1.2) 59 (26.3%) 98.5 (13.2)
34 (15.5%) 20 (9.1%) 139 (63.5%) 26 (11.9%)
96 (42.9%) 90 (40.2%) 38 (17.0%)
2.7 (1.2)
149 (67.4%)
56.0 (12.2)
57.5 (11.0)
57.1 (8.6)
65 (84.4%) 17.6 (1.3) 25 (32.5%) 98.5 (11.5)
14 (8.7%) 7 (9.3%) 48 (64.0%) 6 (8.0%)
40 (51.9%) 24 (31.2%) 13 (16.9%)
2.8 (1.2) 54 (71.1%) 55.0 (11.9) 57.0 (11.1)
55.6 (8.0) was available
107 (72.8%) .05* 17.7 (1.2) .603 34 (23.1%) .132 98.6 (14.1) .973 .537
20 (13.9%) 13 (9.0%) 91 (63.2%) 20 (13.9%)
.099 56 (38.1%) .088 66 (44.9%) .058 25 (17.0%) .826 2.6 (1.2) .210 95 (65.5%) .404 56.6 (12.1) .338 57.3 (10.9) .671 57.9 (8.8) .062
1 Number of patients for whom information about the characteristic * p ≤.05 (two-tailed)
Further, the dropout group significantly more often displayed disruptive behaviour prior to age 12 and more often showed disruptive behaviour at school. These three characteristics significantly predicted membership of the dropout group
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