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Table 1 Baseline characteristics of study sample

From: Health-related quality of life of long-term patients receiving opioid agonist therapy: a nested prospective cohort study in Norway

  Percentages or Mean (SD)
Patients, na
Gender, n = 609
  Male 71%
  Female 29%
Age, n = 609
   < 25 3%
  26–40 39%
  41–60 53%
   ≥ 61 5%
  Mean age (SD) 44 (10)
Current OAT medication, n = 588
  Methadone 38%
  Buprenorphine 56%
  Buprenorphine/naloxone 4%
  Other 2%
  Duration of OAT treatment in years, mean (SD), n = 583 7.9 (5.4)
Background demographics
  Highest level of completed education, n = 588
  Did not complete primary and secondary school 5%
  Completed primary and secondary school 45%
  High school 40%
  Undergraduate education ≤3 years 8%
  Postgraduate education ≥3 years 2%
  Main source of income, several answers possible, n = 611
  Paid work (full time or part time) 7%
  Sick pay or unemployment benefits 10%
  Social or disability benefits 79%
  Savings or scholarships 1%
  Other 3%
 Accommodation last 30 days several answers possible, n = 606
  Owned property 9%
  Rented property 68%
  Temporary property 7%
  Prison 1%
  Homeless 1%
  At friends or family 12%
  Other 2%
 Living conditions n = 586
  Living alone 63%
  Living with others 37%
 Children n = 587
  Do not have children 44%
  Have children 56%
 For those having children < 18 years old, n = 152
  Having children < 18 with visiting rights 79%
  Having children < 18, but no visiting rights 21%
  1. OAT Opioid agonist therapy, SD Standard deviation,
  2. an = number of respondents, some questions allow multiple answers