This document presents tables, graphs, and narrative text that provide information for planning Washington's early intervention programs for infants and toddlers. Data were analyzed on the number and characteristics of infants and toddlers with disabilities and special health problems who were enrolled in Washington State public services at four timepoints: December 1, 1993; May 1, 1995; December 1, 1995; and May 1, 1996. Major findings include the following: (1) the enrollment rate has been generally stable; (2) the national prevalence rate has been consistently higher than the Washington State enrollment rate; (3) the enrollment rate for Medicaid eligible children was consistently higher than that for non-Medicaid children; (4) rural counties have higher enrollment rates; (5) very low birthweight and extreme prematurity were the risk factors associated with the highest enrollment rates; (6) enrollment rates between 5 and 10 percent were found for medium low birthweight infants, moderately preterm infants, infants with Apgar scores of less than 8, and infants born to mothers who received no prenatal care, who were identified as substance abusers, or who were younger than 15 years old; and (7) among children who were Medicaid eligible, enrollment rates were highest for children with Down Syndrome and cerebral palsy compared to other children with specific medical conditions. (Contains 37 references.) (CR)