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NTDB National Sample ProgramThe National Trauma Data Bank (NTDB) National Sample Program (NSP) is a national probability sample of 100 Level I and II trauma centers in the US. The goal of the NTDB NSP is to enhance current injury information by providing nationally representative baseline estimates of trauma care to meet the needs of trauma care assessment, clinical outcomes research, and injury surveillance. This program is supported by the Centers for Disease Control and the American College of Surgeons. The NTDB National Sample is a unique and powerful data base that includes information on trauma patients, such as admission and discharge status, patient demographics (eg, gender, age, race), injury and diagnosis (mechanism, e-code, ICD-9 or AIS code), procedure codes, injury severity scores (ISS, GCS), and outcome variables (eg, length of stay, ICU days, payment method). To request the NSP for research purposes, visit our Research Datasets Web page. Because the NTDB NSP is a stratified sample, proper statistical techniques must be used to calculate standard errors and confidence intervals. Below is an example of SAS source code and STATA source code for estimating proportions and means with appropriate confidence interval. For additional information about the National Sample Program:
Contact NTDB® NSP American College of Surgeons Melanie Neal, NTDB Manager
Revised August 21, 2009
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