Document Detail

Comparing patients' predicted test scores from a regression equation with their obtained scores: a significance test and point estimate of abnormality with accompanying confidence limits.
MedLine Citation:
PMID:  16719619     Owner:  NLM     Status:  MEDLINE    
In contrast to the standard use of regression, in which an individual's score on the dependent variable is unknown, neuropsychologists are often interested in comparing a predicted score with a known obtained score. Existing inferential methods use the standard error for a new case (s-subN+1) to provide confidence limits on a predicted score and hence are tailored to the standard usage. However, s-subN+1 can be used to test whether the discrepancy between a patient's predicted and obtained scores was drawn from the distribution of discrepancies in a control population. This method simultaneously provides a point estimate of the percentage of the control population that would exhibit a larger discrepancy. A method for obtaining confidence limits on this percentage is also developed. These methods can be used with existing regression equations and are particularly useful when the sample used to generate a regression equation is modest in size. Monte Carlo simulations confirm the validity of the methods, and computer programs that implement them are described and made available.
John R Crawford; Paul H Garthwaite
Related Documents :
19243679 - Model-related factor score predictors for confirmatory factor analysis.
25386789 - Correction: exploring the mirna regulatory network using evolutionary correlations.
8811489 - Biases in amino acid replacement matrices and alignment scores due to rate heterogeneity.
20404769 - Time trends in physical activity in the state of são paulo, brazil: 2002-2008.
17455029 - Clinical validation of canadian wais-iii index short forms in inpatient neuropsychiatry...
17534709 - Variance decomposition using an irt measurement model.
2249969 - Applications of a sequential alternating treatment design.
10372159 - A meta-analysis of published studies concerning the validity of thoracic impedance card...
3214719 - A morphometric analysis of synaptic vesicle distributions.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Neuropsychology     Volume:  20     ISSN:  0894-4105     ISO Abbreviation:  Neuropsychology     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-05-24     Completed Date:  2006-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8904467     Medline TA:  Neuropsychology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  259-71     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2006 APA, all rights reserved.
School of Psychology, University of Aberdeen, Aberdeen, United Kingdom.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Confidence Intervals*
Data Interpretation, Statistical*
Monte Carlo Method
Neuropsychological Tests / statistics & numerical data*
Predictive Value of Tests
Regression Analysis*
Sensitivity and Specificity
Weights and Measures

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Remembering the message: the use of a reminder cue to increase condom use following a safer sex inte...
Next Document:  The role of the corpus callosum in dichotic listening: a combined morphological and diffusion tensor...