Table 3 Characteristics of antipsychotic drugs at the start of the study
Drug | n | Percent (%) of prescribings | Dose, mean ± SD | Median Dose (mg) | Range (mg) | Mean Dose (mg) Haloperidol equivalents | Halo-peridol |
|---|---|---|---|---|---|---|---|
1 mg equivalent doses a | |||||||
First generation AP | |||||||
Haloperidol | 25 | 17.0 | 2.1±3.1 | 1.0 | 0.5-16 | 2.1 | 1 |
Levomepromazine | 12 | 8.1 | 19.6±15.6 | 15.0 | 5-50 | 0.4 | 50 |
Zuclopenthixol | 6 | 4.1 | 3.7±2.0 | 3.0 | 2-6 | 0.7 | 5 |
Dixyrazine | 5 | 3.4 | 32.0±38.3 | 20.0 | 10-100 | 1.1 | 30 |
Melperone | 4 | 2.7 | 33.8±11.1 | 30.0 | 25-50 | 0.8 | 40 |
Perphenazine | 4 | 2.7 | 7.8±5.9 | 6.0 | 3-16 | 1.9 | 4 |
Chlorpromazine | 1 | 0.7 | 100.0 | 2.0 | 50 | ||
Second generation AP | |||||||
Risperidone | 62 | 42.2 | 1.1±1.1 | 0.8 | 0.25-8 | 1.1 | 1 |
Olanzapine | 18 | 12.2 | 6.9±5.1 | 5.0 | 3-20 | 2.3 | 3 |
Ziprasidone | 6 | 4.1 | 60.0±31.0 | 50.0 | 40-120 | 1.5 | 40 |
Clozapine | 3 | 2.0 | 216.7±332.0 | 25.0 | 25-600 | 4.3 | 50 |
Quetiapine | 1 | 0.7 | 50.0 | 0.3 | 150 | ||