NavGeneral InfoEmail Print Geography United States of America (USA) Coverage type Country Time period covered 01/1959 - 01/2001 Data type Survey: Household Summary United States National Health Care Surveys (DUP) Citation Contributors Centers for Disease Control and Prevention (CDC) Suggested citation Centers for Disease Control and Prevention (CDC). United States National Health Care Surveys (DUP). GHDx Entry last modified on: Mar 7, 2022