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Table 2 Clinical characteristics of patient group

From: Association between opioid use disorder (tramadol) and serum level of interleukin-2

Clinical characteristics Patient (n = 59)
Age of onset (years) 23.03 ± 5.70
 14–25 years 40 (67.8%)
 > 25 years 19 (32.2%)
Duration (years) 5.66 ± 2.81
Dose (mg/day) 1243.22 ± 629.9
Urine assay
 50- 200 ng/ml 17 (28.8%)
 > 200 ng/ml 42 (71.2%)
  1. Data was expressed in the form of mean ± SD and frequency (percentage)