Obtains the power given sample size or obtains the sample size given power for the Cochran-Armitage trend test for ordered multi-sample binomial response.
getDesignOrderedBinom(
beta = NA_real_,
n = NA_real_,
ngroups = NA_integer_,
pi = NA_real_,
w = NA_real_,
allocationRatioPlanned = NA_integer_,
rounding = TRUE,
alpha = 0.05
)An S3 class designOrderedBinom object with the following
components:
power: The power to reject the null hypothesis.
alpha: The two-sided significance level.
n: The maximum number of subjects.
ngroups: The number of treatment groups.
pi: The response probabilities for the treatment groups.
w: The scores assigned to the treatment groups.
trendstat: The Cochran-Armitage trend test statistic.
allocationRatioPlanned: Allocation ratio for the treatment
groups.
rounding: Whether to round up sample size.
The type II error.
The total sample size.
The number of treatment groups.
The response probabilities for the treatment groups.
The scores assigned to the treatment groups. This should reflect the ordinal nature of the treatment groups, e.g. dose levels. Defaults to equally spaced scores.
Allocation ratio for the treatment groups.
Whether to round up sample size. Defaults to 1 for sample size rounding.
The two-sided significance level. Defaults to 0.05.
Kaifeng Lu, kaifenglu@gmail.com
(design1 <- getDesignOrderedBinom(
beta = 0.1, ngroups = 3, pi = c(0.1, 0.25, 0.5), alpha = 0.05))
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