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Table 1 Factors associated with repeated acute poisoning by substances of abuse within 1 week—logistic regression analysis

From: Factors associated with rapidly repeated acute poisoning by substances of abuse: a prospective observational cohort study

  Cases total Re-presentation within a week Crude Adjusted
n n (%) Odds ratio 95% CI p-value Odds ratio 95% CI p-value
Gender
 Females 640 47 (7) 1    1   
 Males 1312 122 (9) 1.3 0.91–1.8 0.15 0.97 0.67–1.4 0.89
Agea 1.03 1.02–1.04 < 0.001 1.03 1.01–1.04 0.001
Toxic agent at index episode
 Ethanol 1188 95 (8) 1    1   
 Opioids 437 50 (11) 1.5 1.0–2.1 0.032 1.5 1.0–2.3 0.028
 Stimulants 90 6 (7) 0.82 0.35–1.9 0.65 0.97 0.40–2.3 0.94
 GHB 45 4 (9) 1.1 0.39–3.2 0.83 1.4 0.50–4.2 0.50
 Benzodiazepines 129 10 (8) 0.97 0.49–1.9 0.92 1.4 0.69–3.0 0.34
 Other 63 4 (6) 0.78 0.28–2.2 0.64 1.0 0.36–3.0 0.94
Suicidal intention at index episodeb 73 3 (4) 0.44 0.14–1.4 0.17 0.44 0.13–1.6 0.21
Severe mental illnessb 157 18 (11) 1.4 0.84–2.4 0.19 1.6 0.93–2.7 0.091
Homelessnessb 153 29 (19) 2.8 1.8–4.3 < 0.001 2.0 1.3–3.2 0.003
Self-dischargedb 324 46 (14) 2.0 1.4–2.9 < 0.001 1.7 1.2–2.4 0.007
Referred specialist servicesb 235 12 (5) 0.54 0.29–0.98 0.042 0.64 0.34–1.2 0.16
Total 1952 169 (9)       
  1. Odds ratios adjusted for the variables in the table. Adjusted odds ratios for significant associations are shown in Italic types
  2. CI confidence interval, GHB gamma-hydroxybutyrate
  3. aContinuous variable
  4. bReference groups were no suicidal intention at index episode, no history of severe mental illness, not being homeless, regular discharge, no referral to outpatient psychiatric and/or addiction specialist health services