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| Titel: |
Estimating the Dilution Effect Due to Unreliability of Dichotomous Outcome Variables From Kappa |
| Auteur: |
Schuster, Christof von Eye, Alexander |
| Verschenen in: |
Applied developmental science |
| Paginering: | Jaargang 7 (2003) nr. 2 pagina's 87-93 |
| Jaar: |
2003-04-01 |
| Inhoud: |
If category-specific reliabilities are constant across groups, the difference in group-specific "success" probabilities estimated from an unreliable dichotomous outcome variable can be shown to be diluted. Thus, although an intervention may truly have a sizable effect, this effect may not be detectable because of unreliability of the outcome variable. This article explores the dilution effect in a latent class analysis framework in which reliability is defined as the probability with which the manifest measure and the true state correspond. The size of the dilution effect will be related to the popular kappa coefficient, which is often used to assess the reliability of dichotomous variables. Conditions will be specified under which the magnitude of the dilution effect can be estimated from kappa. |
| Uitgever: |
Psychology Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 7 gevonden artikelen
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