TABLE 1.
ADHD Care Descriptive Statistics and the Percentage of Variance Accounted for by Practices, Pediatricians, and Patients
| Mean | SE | Practice-Related Variability, % | Pediatrician-Related Variability, % | Patient-Related Variability, % | n | |
|---|---|---|---|---|---|---|
| ADHD assessment | ||||||
| Use of a parent ADHD rating scale during assessment | 56.7% | 3.7% | 20.6*** | 9.3** | 70.2*** | 1098 |
| Use of a teacher ADHD rating scale during assessment | 55.5% | 3.6% | 17.9** | 10.8*** | 71.3*** | 1098 |
| DSM-IV ADHD criteria documented in chart | 70.4% | 3.4% | 17.4** | 10.0** | 72.6*** | 708a |
| ADHD treatment | ||||||
| Of those assessed for ADHD, patient prescribed medication | 93.4% | 0.8% | 1.6 | 0.8 | 97.6*** | 1594 |
| Of those assessed for ADHD, patient prescribed psychosocial treatment | 13.0% | 2.0% | 11.9** | 8.6*** | 79.5*** | 1594 |
| ADHD treatment contacts | ||||||
| For those with at least 30 d of treatment, percentage who had contact in first month | 47.4% | 1.9% | 2.8* | 3.2* | 94.0c | 1518 |
| For those who were followed for at least 1 y, number of contacts in first year | 5.7 visits | 0.2 | 9.8** | 10.1** | 80.1*** | 784 |
| For those who were followed for at least 2 y, number of contacts in second year | 3.1 visits | 0.2 | 10.5 | 0.9 | 88.6*** | 333 |
| For those who were followed for at least 3 y, number of contacts in third year | 2.8 visits | 0.2 | 4.1 | 20.6 | 75.0*** | 168 |
| For those treated and with first contact, time to first contact after starting treatment | 72.4 d | 5.4 | 1.3 | 3.4 | 95.4*** | 1405 |
| For those treated and with second contact, time to second contact after starting treatment | 147.7 d | 8.1 | 2.4 | 3.4 | 94.2*** | 1226 |
| For those treated and with third contact, time to third contact after starting treatment | 226.4 d | 10.3 | 2.8 | 1.5 | 95.8*** | 1007 |
| Use of a parent ADHD rating scale to monitor treatment within 1 y of starting treatment | 10.8% | 2.7% | 27.3*** | 15.2*** | 57.6*** | 784 |
| For those with parent ADHD rating scale ever, time since starting treatment to scale completion | 396.2 d | 181.6 | 23.8 | 18.9 | 57.3** | 154 |
| Use of a teacher ADHD rating scale to monitor treatment within 1 y of starting treatment | 7.5% | 1.5% | 7.2* | 10.1** | 82.6*** | 784 |
| For those with teacher ADHD rating scale ever, time since starting treatment to scale completion | 362.6 d | 104.9 | 18.8 | 26.1 | 55.1** | 111 |
*
P < .05, ** P < .01, *** P < .001.
a
Only uses patients whose pediatrician conducted the ADHD evaluation.