NATIONAL ACCIDENT SAMPLING SYSTEM SAMPLE DESIGN. PHASES 2 AND 3. EXECUTIVE SUMMARY
The report describes the Phase 2 and 3 sample design for the National Accident Sampling System (NASS). It recommends a procedure for the first-stage selection of Primary Sampling Units (PSU's) and the second-stage design for the selection of accidents for investigation. Cost models are developed to estimate the operating characteristics of the NASS. The design features extensive use of stratification and clustering. Controlled probability selection is used to insure geographic dispersion of the 75 recommended investigation sites, including the initial 10 NASS pilot sites.
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- See also Volume 1, PB80-181316.
Westat, IncorporatedResearch Division, 11600 Nebel Street
Rockville, MD United States 20852
Washington, DC United States 20590
- Edmonds, H J
- Hanson, R H
- Morganstein, D R
- Waksberg, J
- Publication Date: 1979-11
- Pagination: 26 p.
- TRT Terms: Casualties; Cluster analysis; Costs; Crash investigation; Data collection; Design; Estimates; Injuries; Loss and damage; Mathematical models; Prevention; Safety; Sampling; States; Statistical analysis; Traffic crashes; Traffic safety
- Identifier Terms: National Accident Sampling System
- Uncontrolled Terms: Clustering; Models; Motor vehicle accidents
- Subject Areas: Data and Information Technology; Design; Finance; Highways; Safety and Human Factors; Security and Emergencies; I81: Accident Statistics;
- Accession Number: 00314075
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: DOT-HS-805-273
- Contract Numbers: DOT-HS-7-01706
- Files: NTIS, TRIS, USDOT
- Created Date: Aug 5 2002 12:00AM