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Sample Size Calculator (web)

Kappa (2 raters) - Hypothesis Testing¹

Minimum acceptable kappa (κ₀):
Expected kappa (κ₁):
Proportion of outcome (p), e.g. p of heart disease:
Significance level (α): Two-tailed
Power (1 - β): %
Expected dropout rate: %

Sample size, n =
Sample size (with 10% dropout), n_drop =

Kappa (2 raters) - Estimation²

Expected kappa (κ):
Precision (± expected):
Proportion of outcome (p), e.g. p of heart disease:
Confidence level 100(1 - α): %
Expected drop-out rate: %

Sample size, n =
Sample size (with 10% drop-out), n_drop =

References:

¹Donner, A., Eliasziw, M. (1992). A goodness-of-fit approach to inference procedures for the kappa statistic: Confidence interval construction, significance-testing and sample size estimation. Statistics in Medicine, 11, 1511-1519.

²Shoukri, M. M., Asyali, M. H., Donner, A. (2004). Sample size requirements for the design of reliability study: review and new results. Statistical Methods in Medical Research, 13, 1-21.

Suggested reference:

APA: Arifin, W. N. (2018). A web-based sample size calculator for reliability studies. Education in Medicine Journal, 10(3), 67–76. https://doi.org/10.21315/eimj2018.10.3.8

Vancouver: Arifin, WN. A web-based sample size calculator for reliability studies. Education in Medicine Journal. 2018;10(3):67–76. https://doi.org/10.21315/eimj2018.10.3.8

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