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Table 1 Characteristics of the respondents

From: Age of onset of substance use and psychosocial problems among individuals with substance use disorders

Characteristics of respondents Total n (%) (Early onset) n (%) (Late onset) n (%) P value
Demographic characteristics
 Age of substance abusers in years Mean ± SD 25.77 ± 8.83 34.16 ± 8.72 <0.001*
 Gender (male) 190 (86%) 127 (90.1%) 63 (78.8%) 0.026*
 Educational level
  > Secondary level 118 (53.4%) 74 (52.5%) 44 (55.0%) 0.780
Occupation
 Economically inactive 140 (63.3%) 101 (71.6%) 39 (48.8%) 0.001*
Substance use related characteristics
Current type of substance use
 Licit 68 (30.8%) 21 (14.9%) 47 (58.8%)  
 Illicit 56 (25.3%) 44 (31.2%) 12 (15.0%) <0.001*
 Both (Licit + Illicit) 97 (43.9%) 76 (53.9%) 21 (26.2%)  
Current frequency of substance use
  ≥ 3 times 176 (79.6%) 128 (90.8%) 48 (60.0%) <0.001*
 Duration of substance use in years (Mean ± SD) 8.43 ± 7.40 9.39 ± 6.99 0.348
 Relapse after first treatment 100 (45.2%) 76 (53.9%) 24 (30.0%) 0.001*
Mode of substance use
 Injecting 57 (25.8%) 51 (36.2%) 6 (7.5%) <0.001*
  1. n = 221
  2. *p significant at ≤ 0.05 level