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

 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)

 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)