Extension of the National Survey to Determine the Incidence, Prevalence, and Costs of Head and Spinal Cord Injury. Phase 4. Evaluation of Private Implementation

摘要

The National Head and Spinal Cord Injury Survey (Supplement to the Journal of Neurosurgery, November 1980) was a large-scale effort to obtain statistics on the incidence, prevalence, and economic costs of injuries to the head or spinal cord. Eligibility in the survey was restricted to individuals admitted to a hospital for inpatient care as a result of a physical injury (except birth trauma) caused by an external, mechanical force. A three-stage sampling plan was put into effect, and it led to a random sample from which statistics (with associated measures of precision) were produced for the United States. This document reports on a special investigation to consider the implications of periodically re-doing the survey using methods and procedures developed for the original work.