DHHS Publication PHS 97-1397. Vital and Health Statistics, Series 2, Data Evaluation and Methods Research, No. 123. By Louise B. Russell, et al. NHANES 1 stands National Health and Nutrition Examination Survey First Follow Up. Compares hospitalization data from the NHANES 1 Epidemiologic Followup Study (NHEFS) with data from the National Hospital Discharge Survey (NHDS). Intended to help analysts evaluate the validity and generality of analyses based onthe NHEFS.