Table 3.

Regression Adjusted Annual Average Use of Services by Types of Service and Events for Children < 18 Years Old in the United States, 1996–2001

	Regression Adjusted Utilization (95% CI)
Types of Service	Without Diagnosed Eye/Vision Condition	With Diagnosed Eye/Vision Condition
Total Emergency Visits	0.15 (0.14–0.16)	0.25 (0.23–0.26)
Eye/Vision-Related	0	0.08 (0.06–0.09)
Non-Eye/Vision-Related	0.15 (0.14–0.16)	0.19 (0.18–0.20)
Total Hospitalizations	0.04 (0.04–0.05)	0.05 (0.05–0.05)
Eye/Vision-Related	0	N/A
Non-Eye/Vision-Related	0.04 (0.04–0.06)	0.04 (0.04–0.04)
Total Office-Based Visits	2.45 (2.37–2.53)	4.19 (4.05–4.32)
Eye/Vision-Related	0	1.07 (1.05–1.09
Non-Eye/Vision-Related	2.46 (2.38–2.54)	3.20 (3.10–3.31)
Total Outpatient Visits	0.12 (0.12–0.13)	0.20 (0.19–0.21)
Eye/Vision-Related	0	N/A
Non-Eye/Vision-Related	0.12 (0.12–0.13)	0.16 (0.16–0.17)
Total Prescriptions	1.99 (1.88–2.10)	3.43 (3.25–3.63)
Eye/Vision-Related	0	0.29 (0.28–0.30)
Non-Eye/Vision-Related	1.99 (1.89–2.11)	3.12 (2.95–3.29)

Notes: All estimates and confidence intervals (CI) are corrected for the complex survey design of the MEPS and for multiple imputation of missing data. Regression adjusted utilization levels were estimated using a generalized linear model (GLM) with a log link and a gamma error distribution. Source of data: Medical Expenditure Panel Survey (MEPS). N/A=There were too few inpatient or outpatient events to estimate.