The purpose of this study was to assess lifetime economic costs for people with four developmental disabilities (DDs): mental retardation, cerebral palsy, hearing loss, and vision impairment. Estimates were generated for direct medical costs, direct non-medical costs, and productivity losses resulting from increased morbidity and premature mortality. Findings suggest that lifetime costs, in excess of costs for individuals without DDs, are approximately $870,000 per person for mental retardation and $800,000 per person for cerebral palsy (in 2000 dollars). Analogous cost estimates for hearing loss and vision impairment are approximately $330,000 and $470,000, respectively. Roughly four-fifths of total costs reflect productivity losses.
