Understanding Ferguson's delta: time to say good-bye? Terluin B, Knol DL, Terwee CB, de Vet HC - Health Qual Life Outcomes (2009) Bottom Line: A critique of Hankins, M: 'How discriminating are discriminative instruments?' Health and Quality of Life Outcomes 2008, 6:36. View Article: PubMed Central - HTML - PubMed ABSTRACTA critique of Hankins, M: 'How discriminating are discriminative instruments?' Health and Quality of Life Outcomes 2008, 6:36. Show MeSH MajorData Interpretation, Statistical*Discriminant Analysis*Mathematical Concepts*MinorHumansReproducibility of ResultsStatistical Distributions Related in: MedlinePlus © Copyright Policy - open-access Related In: Results  -  Collection License getmorefigures.php?uid=PMC2691398&req=5 .flowplayer { width: px; height: px; } Figure 6: The impact of distribution on Ferguson's δ. Illustration of the association between the score distribution and Ferguson's δ using simulated data. Figure A represents a normal distribution (n = 30); Figure B represents a skewed distribution (n = 30); Figure C represents a highly skewed distribution with a marked 'floor effect' (n = 30). Mentions: Consider 30 subjects displaying a normal distribution on a 10-point scale (Figure 6a). is 106. The standard computation of Ferguson's δ yields: .

Understanding Ferguson's delta: time to say good-bye?

Terluin B, Knol DL, Terwee CB, de Vet HC - Health Qual Life Outcomes (2009)

Related In: Results  -  Collection

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Figure 6: The impact of distribution on Ferguson's δ. Illustration of the association between the score distribution and Ferguson's δ using simulated data. Figure A represents a normal distribution (n = 30); Figure B represents a skewed distribution (n = 30); Figure C represents a highly skewed distribution with a marked 'floor effect' (n = 30).
Mentions: Consider 30 subjects displaying a normal distribution on a 10-point scale (Figure 6a). is 106. The standard computation of Ferguson's δ yields: .

Bottom Line: A critique of Hankins, M: 'How discriminating are discriminative instruments?' Health and Quality of Life Outcomes 2008, 6:36.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
A critique of Hankins, M: 'How discriminating are discriminative instruments?' Health and Quality of Life Outcomes 2008, 6:36.

Show MeSH
Related in: MedlinePlus