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Table 2 Case fatality indices– number of suicides involving a given drug per non-fatal self-poisoning episode relative to a. lithium and b. chlorpromazine

From: Relative toxicity of mood stabilisers and antipsychotics: case fatality and fatal toxicity associated with self-poisoning

  Odds ratio (95% CI)
Single drug only Single and first listed drug
A. Mood Stabilisers
 Lithium 1.0 1.0
 Sodium Valproate 0.92 (0.35–2.45) 0.66 (0.30–1.49)
 Carbamazepine 2.33 (0.94–5.74) 2.37 (1.16–4.85)
 Lamotrigine 0.68 (0.20–2.28) 0.97 (0.40–2.35)
B. Antipsychotics
 Chlorpromazine 1.0 1.0
 Risperidone 0.06 (0.01–0.47) 0.08 (0.02–0.34)
 Quetiapine 1.12 (0.58–2.18) 1.15 (0.67–1.97)
 Olanzapine 1.84 (0.97–3.52) 1.65 (0.97–2.80)
 Clozapine 18.53 (8.69–39.52) 13.38 (6.88–26.00)