NTDB National Sample Program
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 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:
- Detailed Description on how the Sample was Created (135K PDF)
- Description of Sample Maintenance (115K PDF)
- User Manual for the NTDB NSP (460K PDF)
- Comparison of National Estimates using NTDB NSP vs NIS (20K PDF)
Contact NTDB® NSP
American College of Surgeons
National Trauma Data Bank®
633 N. St. Clair 26th Floor
Chicago, IL 60611
Melanie Neal, NTDB Manager
E-Mail: mneal@facs.org
Phone: 312-202-5536
Revised April 20, 2010