The National Trauma Data Bank® (NTDB®) National Sample Program (NSP) is a national probability sample of 100 Level I and II trauma centers in the United States. 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 Prevention and the American College of Surgeons (ACS).
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 (for example, gender, age, race); injury and diagnosis (i.e., mechanism, e-code, ICD-9 or AIS code); procedure codes; injury severity scores (i.e., the Injury Severity Score, Glasgow Coma Scale); and outcome variables (for example, length of stay, intensive care unit days, payment method).
To request the NSP for research purposes, visit our Research Datasets. 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.
Additional Information About the NSP
Contact NTDB NSP
ACS National Trauma Data Bank
633 N. Saint Clair St., 26th Floor
Chicago, IL 60611
Chrystal Caden-Price, NTDB Data Manager