A statistical model for the response patterns to chemical tests for the absence or presence of trace materials

E. McKenzie, G. Gettinby, J. Lloyd, B. Caddy

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A statistical method is described which enables comparisons to be made between two sets of data where each datum can only be expressed as a positive or negative value. The method is based upon logistic regression analysis. It has been applied to patterns of positive and negative responses to chromatographic analyses carried out on hand swabs taken from a number of subjects suspected of handling explosives, and experimentally simulated data acquired on the basis of a contamination hypothesis. The analyses indicate that both patterns demonstrate ordering and that these orders are statistically indistinguishable.
LanguageEnglish
Pages31-36
Number of pages5
JournalScience and Justice
Volume35
Issue number1
DOIs
Publication statusPublished - Jan 1995

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Statistical Models
Chromatography
Hand
Logistic Models
Regression Analysis
Datasets

Keywords

  • statistics
  • statistical comparison
  • logistic regression analysis
  • comparative chromatographic data

Cite this

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A statistical model for the response patterns to chemical tests for the absence or presence of trace materials. / McKenzie, E.; Gettinby, G.; Lloyd, J.; Caddy, B.

In: Science and Justice, Vol. 35, No. 1, 01.1995, p. 31-36.

Research output: Contribution to journalArticle

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