Erratum

Figures & data

Table 4.  Prevention of hospitalization events for exacerbation of schizophrenia based on 1-year risk ratios (hospitalizations per total person year of exposure).

Drug Comparison	AR	NNT (95% CI)	NNT Rounded Up	AR × 100
Olanzapine vs. Quetiapine	0.26	3.8 (2.9 to 5.7)	4	26
Olanzapine vs. Risperidone	0.13	7.7 (4.8 to 19.2)	8	13
Olanzapine vs. Ziprasidone	0.22	4.4 (3.0 to 8.5)	5	22
Olanzapine vs. Perphenazine	0.16	6.2 (4.0 to 13.5)	7	16

Table 6.  Events expected when treating 100 patients with olanzapine rather than a comparator over 18 months.

Outcome: Olanzapine vs …	Quetiapine	Risperidone	Ziprasidone	Perphenazine
All-Cause Discontinuation	18 fewer*	10 fewer*	16 fewer*	11 fewer*
Hospitalized Patients	9 fewer*	4 fewer	7 fewer *	4 fewer
Hospitalization Events in 12 Months (extrapolated to 18 months)†	26* (39) fewer	13* (19) fewer	22* (33) fewer	16* (24) fewer
Weight Gain >7%	14 more*	16 more*	23 more*	18 more*
New Prescription for Glucose-Lowering Agent or Insulin	2 more	2 more	2 more	2 more
New Prescription for Statin	1 more	2 more	4 more*	2 more

Table 7.  LHHs for olanzapine vs. other antipsychotics.

Olanzapine vs…	Risperidone			Quetiapine			Perphenazine			Ziprasidone
	NNH	NNT	LHH	NNH	NNT	LHH	NNH	NNT	LLH	NNH	NNT	LHH
WG > 7%/HEA	6.3	7.7	0.82	7.2	3.8	1.89	5.6	6.2	0.90	4.4	4.4	1.00
DWGM/HEA	13.4	7.7	1.74	17.6	3.8	4.63	12.4	6.2	2.00	16.7	4.4	3.80