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The Kaplan–Meier estimator, [1] [2] also known as the product limit estimator, is a non-parametric statistic used to estimate the survival function from lifetime data. In medical research, it is often used to measure the fraction of patients living for a certain amount of time after treatment.
The Miller Analogies Test (MAT) was a standardized test used both for graduate school admissions in the United States and entrance to high I.Q. societies.Created and published by Harcourt Assessment (now a division of Pearson Education), the MAT consisted of 120 questions in 60 minutes (an earlier iteration was 100 questions in 50 minutes).
KNA's test preparation services are branded through Kaplan Test Prep, Manhattan Prep and Barron's Educational Series. In total, Kaplan's test prep offerings prepare students for more than 233 standardized tests, most of which are U.S. focused. Kaplan Publishing focuses on print and digital test preparation and reference resources.
The Boston Diagnostic Aphasia Examination is a neuropsychological battery used to evaluate adults suspected of having aphasia, and is currently in its third edition. [1] It was created by Harold Goodglass and Edith Kaplan. The exam evaluates language skills based on perceptual modalities (auditory, visual, and gestural), processing functions ...
[3] Criterion validity is typically assessed by comparison with a gold standard test. [ 4 ] An example of concurrent validity is a comparison of the scores of the CLEP College Algebra exam with course grades in college algebra to determine the degree to which scores on the CLEP are related to performance in a college algebra class. [ 5 ]
The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.
In psychometrics, predictive validity is the extent to which a score on a scale or test predicts scores on some criterion measure. [1] [2] For example, the validity of a cognitive test for job performance is the correlation between test scores and, for example, supervisor performance ratings. Such a cognitive test would have predictive validity ...
As a “yes” answer indicates impairment it is scored 0, while all other answers score 1 point each; (hence higher scores indicate less impairment). A score of 0 to 3 in the informant interview in conjunction with a score of 5 to 8 in the patient interview indicates cognitive impairment and requires further investigations such as lab tests to ...
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