Table 4.
Predictors of the Number of Antipsychotic Prescriptions with No FDA-approved Indication for Young Children among Physicians with At Least One Young Child Antipsychotic Prescription, 2009–2011
| Variable | Odds ratio | 95% confidence interval |
|---|---|---|
| Sex | ||
| Male (reference: female) | 1.03 | 0.94–1.12 |
| Age (reference: 60+) | ||
| <=39 | 1.16 | .98–1.34 |
| 40–49 | 1.18 | 1.05–1.30 |
| 50–59 | 1.13 | 1.02–1.24 |
| Specialty (reference: other psychiatry) | ||
| Child/adolescent psychiatry | 0.89 | .81–0.96 |
| Family medicine | 0.55 | .39–0.72 |
| Practice setting (reference: solo/two-person) | ||
| Group practice | 1.08 | .97–1.19 |
| Other | 1.15 | 1.02–1.28 |
| No classification | 0.92 | .81–1.03 |
| Hospital practice | ||
| Yes (reference: no) | 1.07 | .98–1.17 |
| Rural practice | ||
| Yes (reference: no) | 0.87 | .76–.98 |
| Region (reference: Middle Atlantic) | ||
| New England | 1.17 | .97–1.38 |
| East North Central | 1.19 | 1.03–1.35 |
| West North Central | 1.47 | 1.22–1.72 |
| South Atlantic | .77 | .67–.86 |
| East South Central | .84 | .68–1.00 |
| West South Central | 1.02 | 0.87–1.18 |
| Mountain | 1.46 | 1.19–1.72 |
| Pacific | .90 | .77–1.03 |
| Top 25 medical school graduate | ||
| Yes (reference: no) | 1.09 | .94–1.24 |
| Foreign medical graduate | ||
| Yes (reference: no) | .88 | .80–.95 |
| Total antipsychotic prescribing volume, 2008 (reference: first quartile) | ||
| Second quartile | 1.18 | 1.02–1.35 |
| Third quartile | 1.45 | 1.25–1.65 |
| Fourth quartile | ||
| Share of total antipsychotic prescriptions paid by Medicaid FFS programs, 2008 | 1.49 | 1.27–1.71 |
| Share of total antipsychotic prescriptions paid by cash, 2008 | 4.52 | 0.50–8.53 |
Source: Xponent™ database, 1/08 – 12/11, IMS Health Incorporated. All Rights Reserved.
Note: Analyses use IMS Health's Xponent™ linked with American Medical Association Masterfile data. Young children are defined as those under the age of ten.