Table 3.
Descriptive statistics for the study population (weighted population size= 18,640,820 cross sectional patient visits during 1993–2004)
| Variables | Created analytical variables | Estimated Proportions |
|---|---|---|
| Demographic Characteristics | ||
| Age | ||
| Mean age | 8.8 (SE 0.27) | |
| Age less than 1 yrb,c | 7% | |
| Age 1-3 yrc,d | 15% | |
| Age 4-5 yrc,d | 10% | |
| Age 6-12 yrb,c | 36% | |
| Age 13-17 yrb,c | 32% | |
| Sex | Malec,d | 56% |
| Physician/Practice Characteristics | ||
| Physician specialty | ||
| Pediatricianc,d | 35% | |
| Psychiatristsb,c | 24% | |
| General/Family Practicec | 13% | |
| Neurologistsb,c | 4% | |
| Other specialtiesb,c,d | 23% | |
| Region | ||
| Northeast | 15% | |
| Midwest | 19% | |
| Southb | 44% | |
| West | 23% | |
| Therapy Related Characteristics | ||
| Medication therapy | 81% | |
| Antihistamines | 33% | |
| Alpha 2 agonist | 26% | |
| Benzodiazepines | 15% | |
| Antidepressants | 6% | |
| Nonbenzodiazepines | 1% | |
| Behavioral therapy | 22% | |
| Psychotherapya | 12% | |
| Mental /Stress management therapya | 17% | |
| Diet and nutrition counseling | 7% | |
| Both Behavioral and Medication Therapy | 19% | |
a Population size=16,916,314.
b significantly correlated with having medication therapy at P ≤ 0.05 level of significance
c significantly correlated with having behavioral therapy at P ≤ 0.05 level of significance,
dsignificantly correlated with diet and nutrition counseling at P ≤ 0.05 level of significance. All analyses weighted using NAMCS cross-sectional weights.