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Table 2 Previous interventions and psychiatric care in the two groups in compulsory care due to substance abuse: ADHD/SUD group and the general SUD group without known ADHD

From: Attention deficit/hyperactivity disorders with co-existing substance use disorder is characterized by early antisocial behaviour and poor cognitive skills

  ADHD/SUD General SUD    
n = 60 n = 120 χ2 p Φ
Special education in primary school     
Special education in primary school 22 (36.7%) N/A N/A N/A N/A
No special education 36 (60%) N/A
Missing data 2 (3.3%) N/A
Compulsory care during childhood (LVU)    
LVU 26 (43.3%) 34 (28.4%) 4.24 .04 .15
Not LVU 33 (55.0%) 85 (70.8%)
Missing data 1 (1.7%) 1 (0.8%)
Previous imprisonment      
Imprisonment 41 (68.3%) 47 (39.2%) 15.8 <.001 .30
No imprisonment 16 (26.7%) 71 (59.1%)
Missing data 3 (5.0%) 2 (1.7%)    
Previous adult psychiatric care     
Psychiatric care in adulthood 40 (66.7%) 65 (54.2%) 2.50 .12 .12
No psychiatric care in adulthood 18 (30.0%) 50 (41.6%)
Missing data 2 (3.3%) 5 (4.2%)
  1. Note: N/A not assessed in general SUD group.
  2. Note: P-values printed in bold indicate a statistically significant difference.