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Table 1 Characteristics of all 4778 patients in the cohort

From: Retention in the Austrian opioid agonist treatment system: a national prospective cohort study

Characteristics  
OAT sequences  
 Patients with 1 sequence 92.8%
 Patients with 2 sequences 6.4%
 Patients with 3 sequences 0.7%
 Patients with 4 sequences 0.08%
Sex (%)  
 Male 75.0%
 Female 25.0%
Age when treatment started  
  < 20 4.8%
 20–24 25.7%
 25–29 27.9%
 30–39 27.2%
  > 39 14.4%
Region  
 Vienna 28%
 Other Austrian federal states 72%
Substitution medication Start of sequence End of sequence
Methadone 23.2% 20.5%
Levo-methadone 6.9% 8.4%
Buprenorphine 25.9% 24.3%
Buprenorphine/naloxone 5.7% 5.0%
Slow-release morphine 36.2% 39.9%
Other 1.1% 1.4%
Unknown 1.0% 0.5%