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Table 1 Sample Characteristics and Results of Risk Factors Associated With Completed Suicide Among People Treated for Drug Use Disorders Between 2000 and 2010 (n = 27,942)

From: Suicide among people treated for drug use disorders: a Danish national record-linkage study

 n/percentage (mean/standard deviation)Sub hazard ratio (95% confidence interval)
Year before drug use disorder treatment variables1
 Criminal charges within the past year11,663 (41.7)0.86 (0.62, 1.20)
 Self-harm within the past year631 (2.3)1.48 (0.70, 3.10)
 Psychiatric care within the past year5298 (19.0)1.96 (1.39, 2.77)
Clinical variables2
 Use of opioids11,131 (39.8)1.81 (1.23, 2.68)
 Use of central stimulants8661 (31.0)0.85 (0.58, 1.25)
 Use of cannabis14,651 (52.4)0.69 (0.50, 0.96)
 Use of Methyl​enedioxy​methamphetamine2023 (7.2)0.71 (0.34, 1.46)
 Alcohol use (problem drinking)7182 (25.7)1.56 (1.09, 2.23)
 Use of benzodiazepines4458 (16.0)1.18 (0.79, 1.76)
 Intravenous drug use15,299 (54.8)1.23 (0.86, 1.78)
Treatment status2
 Previously treated9623 (34.5)Reference
 Never treated15,212 (54.4)1.14 (0.78, 1.67)
 Missing information3107 (11.1)1.44 (0.84, 2.45)
Socio-demographics1
 Female gender6771 (24.2)0.71 (0.47, 1.05)
 Age (mean/standard deviation)27,942 (33.5/10.5)0.97 (0.95, 0.98)
 Not in education, employment or training19,276 (69.0)1.13 (0.76, 1.70)
 Living without partner20,204 (72.3)1.10 (0.75, 1.63)
 Immigranta2286 (8.2)0.78 (0.41, 1.47)
  1. Note: a not born in Denmark
  2. 1Based on record linkage
  3. 2Based on the Registry of Drug Abusers in Treatment