Table 2.
Atypical antipsychotic treatment patterns during the 12 months prior to the physician survey*
| Medical claims with ICD-9-CM diagnosis codes | ||||
|---|---|---|---|---|
| Characteristic | Total patients (N = 214) | Schizophrenia only (n = 44) | Bipolar disorder only (n = 162) | Schizophrenia and bipolar disorder (n = 8) |
| Patients using index therapy, n (%) | 206† (96.26) | 43 (97.73) | 155 (95.68) | 8 (100) |
| Fills of index therapy‡,mean (±SD, median) | ||||
| Risperidone | 10.50 (±4.41, 10.50) | 10.89 (±2.98, 11.00) | 10.23 (±5.28, 9.00) | n/a |
| Quetiapine | 8.03 (±4.80, 8.50) | 6.70 (±4.40, 6.50) | 8.08 (±4.37, 9.00) | 11.67 (±11.59, 10.00) |
| Olanzapine | 7.63 (±3.69, 7.00) | 8.42 (±4.06, 10.00) | 7.32 (±3.51, 7.00) | 6.75 (±4.03, 7.00) |
| Aripiprazole | 7.15 (±4.56, 8.00) | 9.50 (±3.89, 11.50) | 6.79 (±4.58, 7.00) | n/a |
| Ziprasidone | 6.86 (±4.17, 6.00) | 8.50 (±3.87, 9.50) | 6.33 (±4.53, 4.00) | 5.00 (n/a, 5.00) |
| Paliperidone | 4.75 (±3.85, 3.50) | 2.50 (±0.71, 2.50) | 5.50 (±4.23, 4.50) | n/a |
| Medication possession rate of index therapy, mean (±SD, median) | 57.96 (±30.95, 66.03) | 65.26 (±28.52, 74.77) | 56.02 (±31.50, 63.42) | 57.26 (±30.03, 54.28) |
*
Variables identified from administrative claims data.
†
Eight patients had no atypical antipsychotic prescription filled during the 12 months prior to the physician survey and were excluded from this table.
‡
Five patients had two index atypical antipsychotic medications.