Description Usage Arguments Details Value Author(s) References See Also Examples
Called by ss.fromdata.nvar
. Finds calibrated beta (1-power) for use when estimating
standard deviation from data in sample size calculations for differences in two normal means.
1 | find.calibrated.beta(beta, df, alpha = 0.05)
|
beta |
1-nominal.power |
df |
degrees of freedom |
alpha |
one-sided significance level of test |
See ss.fromdata.nvar
.
Calibrated beta value = 1 - calibrated power.
Michael P. Fay
Fay, M.P., Halloran, M.E., and Follmann, D.A. (2007). 'Accounting for Variability in Sample Size Estimation with Applications to Nonadherence and Estimation of Variance and Effect Size' Biometrics 63: 465-474.
1 2 | ## see Table 2 of Fay et al 2006.
1-find.calibrated.beta(.2,12,.025)
|
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