Table 3.

Fatal toxicity indices – number of suicides involving a given drug per individuals prescribed this drug relative to a. lithium or b. chlorpromazine

	Odds ratio (95% CI)
	Single drug only	Single plus first listed drug
A. Mood Stabilisers
Lithium	1.0	1.0
Sodium Valproate	0.80 (0.31–2.07)	0.58 (0.27–1.25)
Carbamazepine	1.45 (0.61–3.45)	1.47 (0.75–2.89)
Lamotrigine	0.54 (0.17–1.77)	0.78 (0.34–1.80)
B. Antipsychotics
Chlorpromazine	1.0	1.0
Risperidone	0.04 (0.01–0.29)	0.05 (0.01–0.21)
Quetiapine	1.26 (0.66–2.40)	1.29 (0.77–2.15)
Olanzapine	1.63 (0.87–3.05)	1.46 (0.89–2.41)