A mathematical analysis of the relationship between the clinical test results and blood alcohol was performed in 494 cases examined for suspected drunken driving at the Department of Forensic Medicine, University of Helsinki. The performances of 21 clinical tests were symbolized by point values and the relative value of various performances of clinical tests was determined as a point combination resulting in maximal value of correlation coefficient between the test results and blood alcohol. The relative mutual value between various tests was determined using the above-mentioned point combinations and regression analysis, i.e. by determining the optimal blood alcohol estimate on the basis of clinical test results. More than 100 various examination models were displayed using a computer. Highly significant values of the correlation coefficients of various clinical tests and regression coefficients of optimal and several other models indicated the adequacy of the mathematical analysis for generation of a new examination model for suspected drunken drivers. Values of the regression coefficients of the optimal models with 6 or 10 clinical tests were .72 and .73, respectively. The nystagmus tests were the most valuable in all models studied and in the cases with blood alcohol lower than 1.50 the optimal estimate of the blood alcohol level was feasible using only the results of nystagmus phenomenona. The present mathematical design with blood alcohol related error point values of clinical test performances was an advantageous method for standardizing the clinical examination system in relation to blood alcohol, to summarize total error in clinical examination and to combine the results of clinical examination and blood alcohol in an adequate way. /HSRI/

  • Availability:
  • Corporate Authors:

    International Com on Alcohol Drugs & Traf Safety

    Hammerbrookstrasse 93
    2000 Hamburg 1,   Germany 
  • Authors:
    • Kataja, M
    • Tenhu, M
  • Publication Date: 1975-1

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 24-38
  • Serial:
    • Blutalkohol
    • Volume: 12
    • Issue Number: 1
    • Publisher: Bund gegen Alkohol im Strassenverkehr eV
    • ISSN: 0006-5250

Subject/Index Terms

Filing Info

  • Accession Number: 00096236
  • Record Type: Publication
  • Source Agency: Highway Safety Research Institute
  • Files: TRIS
  • Created Date: Jul 15 1975 12:00AM