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8 Cards in this Set
- Front
- Back
What is reliability?
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Reliability is the degree of CONSISTENCY and REPEATABILITY of a data collection instrument
** Most commonly forgotten |
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In what areas are measures subject to errors (variations)?
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1. Variation in the CHARACTERISTIC being measured
2. Variation introduced by the EXAMINER 3. Variation due to the INSTRUMENT / METHOD used |
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What is Intra-Rater Reliability?
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Whether a single rater can obtain similar results when measuring again
(Within Rater Reliability) |
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What is Inter-Rater Reliability?
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Whether two or more raters obtain similar results measuring the same item
(Between Rater Reliability) |
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What is considered excellent reliabilty on the ICC score?
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Anything from 0.80 to 1
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What statistical tests can measure reliability?
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Nominal Data:
Pearson Correlation and - t-tests, - ICC, - R-squared Categorical Data: - Kappa Test - Chi Squared test |
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What is the ICC?
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Interclass Correlation Coefficient:
Measure of Reliability: compares within subject variability to between subject variability |
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What will happen to ICC if between subject variability is too large?
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It will not pick up within subject variability (ie Rolfs Article)
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