PubMed · 2699593
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R Wilkoff. MacCeph: orthodontic computer database and diagnostic generator.. https://pubmed.ncbi.nlm.nih.gov/2699593/
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This report describes a computer program for applying a new statistical method for determining levels of agreement, or reliability, when multiple examiners evaluate a single subject. The statistics that are performed include the following: an overall level of agreement, expressed as a percentage, that takes into account all possible levels of partial agreement; the same statistical approach for deriving a separate level of agreement of every examiner with every other examiner; and tests of the extent to which a giver examiner's rating (say a symptom score of three on a five-category ordinal rating scale) deviates from the group or overall average rating. These deviation scores are interpreted as standard Z statistics. Finally, both statistical and clinical criteria are provided to evaluate levels of interexaminer agreement.
A new method is introduced for assessing levels of interexaminer agreement when multiple ratings are made on a single subject, with an application in psychiatric research. It is designed to provide an overall level of interexaminer agreement and separate indices of agreement for each examiner. These indices are based on biostatistical and clinical criteria to determine whether the ratings of any given examiner are appreciably higher or lower than the group average, or a consensus diagnosis. A number of examples, from ongoing psychiatric research, are provided to illustrate conditions favoring the application of the new methodology. Finally, the necessary software for performing the analyses is available to clinical investigators with interest in this area of assessment.
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