TABLE 4

Ratio of Mean Annual Health Care Costs for Children With ASDs to Mean Annual Health Care Costs for Children Without ASDs According to Service Type and Age Group: Northern California KP, July 2003 to June 2004

Age Group
2–4 y5–9 y10–14 y15–18 y
Outpatient clinic visits2.73.12.42.4
Inpatient hospitalizations1.21.72.94.9
Outpatient hospitalizations1.32.92.21.9
ED encounters1.31.41.11.7
Medication prescriptions2.38.18.18.8