TABLE 1

ADHD Care Descriptive Statistics and the Percentage of Variance Accounted for by Practices, Pediatricians, and Patients

MeanSEPractice-Related Variability, %Pediatrician-Related Variability, %Patient-Related Variability, %n
ADHD assessment
 Use of a parent ADHD rating scale during assessment56.7%3.7%20.6***9.3**70.2***1098
 Use of a teacher ADHD rating scale during assessment55.5%3.6%17.9**10.8***71.3***1098
 DSM-IV ADHD criteria documented in chart70.4%3.4%17.4**10.0**72.6***708a
ADHD treatment
 Of those assessed for ADHD, patient prescribed medication93.4%0.8%1.60.897.6***1594
 Of those assessed for ADHD, patient prescribed psychosocial treatment13.0%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 month47.4%1.9%2.8*3.2*94.0c1518
 For those who were followed for at least 1 y, number of contacts in first year5.7 visits0.29.8**10.1**80.1***784
 For those who were followed for at least 2 y, number of contacts in second year3.1 visits0.210.50.988.6***333
 For those who were followed for at least 3 y, number of contacts in third year2.8 visits0.24.120.675.0***168
 For those treated and with first contact, time to first contact after starting treatment72.4 d5.41.33.495.4***1405
 For those treated and with second contact, time to second contact after starting treatment147.7 d8.12.43.494.2***1226
 For those treated and with third contact, time to third contact after starting treatment226.4 d10.32.81.595.8***1007
 Use of a parent ADHD rating scale to monitor treatment within 1 y of starting treatment10.8%2.7%27.3***15.2***57.6***784
 For those with parent ADHD rating scale ever, time since starting treatment to scale completion396.2 d181.623.818.957.3**154
 Use of a teacher ADHD rating scale to monitor treatment within 1 y of starting treatment7.5%1.5%7.2*10.1**82.6***784
 For those with teacher ADHD rating scale ever, time since starting treatment to scale completion362.6 d104.918.826.155.1**111
  • * P < .05, ** P < .01, *** P < .001.

  • a Only uses patients whose pediatrician conducted the ADHD evaluation.