singlecase-package {singlecase} | R Documentation |
The package implement frequentist and Bayesian inferential methods for use in single-case studies in which a patient is compared to a small control sample.
Package: | singlecase |
Type: | Package |
Version: | 1.0 |
Date: | 2008-05-06 |
License: | GPL 2 or newer |
LazyLoad: | yes |
At this stage of development, the package contains implementation of functions for:
(1) comparison of an individual's score on a single test with the score of a small normative or control sample: crawford.t.test
and SingleBayes
;
(2) test whether the difference between scores on two tests observed for a patient is significantly greater than the differences observed for a small control or normative sample: crawford.diff.test
and DiffBayes
.
crawford.t.test
, and crawford.diff.test
rely upon the $t$-distribution and treat summary statistics from the control group as estimates rather than parameters. SingleBayes
and DiffBayes
are Bayesian inferential alternatives, based on a Monte Carlo process. All methods may take either the raw data or summary statistics from the control population as inputs.
Matthieu Dubois.
Maintainer: Matthieu Dubois matthdub@gmail.com, http://www.code.psp.ucl.ac.be/MatthieuDubois/r_code.html
Crawford, J. and Garthwaite, P. (2002) Investigation of the single case in neuropsychology: Confidence limits on the abnormality of test scores and test score differences. Neuropsychologia, 40(8), 1196–1208.
Crawford, J. and Garthwaite, P. (2005) Testing for suspected impairments and dissociations in single-case studies in neuropsychology: Evaluation of alternatives using Monte Carlo simulations and revised tests for dissociations. Neuropsychology, 19(3), 318–331.
Crawford, J. and Garthwaite, P. (2007) Comparison of a single case to a control or normative sample in neuropsychology: Development of a bayesian approach. Cognitive Neuropsychology, 24(4), 343–372.
Crawford, J. and Howell, D. (1998) Comparing an individual's test score against norms drived from small samples. Clinical Neuropsychologist, 12(4), 482–486.
Crawford, J., Howell, D., and Garthwaite, P. (1998) Payne and Jones revisited: Estimating the abnormality of test score differences using a modified paired samples $t$-test. Journal of clinical and experimental neuropsychology, 20(6), 898–905.