Prevalence and clinical implication of adverse childhood experiences and their association with substance use disorder among patients with schizophrenia

Table 3 Frequency distribution of drug screen positive patients according to their substance use disorder

Variables	Drug screen positive patients (n = 30)
Type of drug
Cannabis	23 (76.7%)
Cannabis, Tramadol	7 (23.3%)
Frequency
Daily	25 (83.3%)
Weekly	5 (16.7%)
Age of onset of substance use
Mean ± SD	19.8 ± 4.6
Duration of substance use (years)
Mean ± SD	10.6 ± 3.9
Abstinence
Yes	19 (63.3%)
No	11 (36.7%)
Hospitalization due to substance use
Yes	4 (13.3%)
No	26 (86.7%)
Addiction severity index
Mean ± SD	28.5 ± 9.4