Loading in 2 Seconds...
Loading in 2 Seconds...
Studying Injuries Using the National Hospital Discharge Survey. Marni Hall, Ph.D. Hospital Care Statistics Branch, Division of Health Care Statistics. Outline of this presentation. Present general information about the design of the National Hospital Discharge Survey (NHDS)
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Marni Hall, Ph.D.
Hospital Care Statistics Branch,
Division of Health Care Statistics
Trends in Injury Hospitalization,
United States, 1979-2001
by Melissa Heinen, Marni Hall,
Manon Boudreault, and Lois Fingerhut
NHDS a national probability sample of short-stay non-federal hospitals - conducted every year since 1965provides data on discharges or hospitalizations – not individuals2002 data - now available2003 data - available in the winter
Three stage design Geographic Units Hospitals Discharges
Automated – 40%
Manual – 60%
Estimates have standard errorsA standard error is the sampling variability that occurs by chance because only a sample rather than the entire universe is surveyed
Plan and Operation of the
National Hospital Discharge Survey: 1988 Redesign
Vital and Health Statistics, 1(39). 2000
Counting injury patientsIf you want the number of patientshospitalized because of an injury – count the first-listed diagnosesIf you want the number of hospitalized patients who have one or more injuries – count any-listed diagnoses
Principal or first listed
Age adjustment - Eliminates the differences in observed rates that result from age differences in population composition over time
Presenting the data Use of the log scale - allows the presentation of estimates with a very wide range on the same graphandfacilitates comparison of the percent change of estimates over time
Presenting the data Measures of changeAAPC – Average annual percent change from 1979-2001APC – Average percent change for 1979-2001
Health service system changes which contributed to the decrease in hospitalization overall and for injuries
Injury prevention activities which contributed to the decrease in hospitalization for injuries