size.ci.oddsratio: Sample size for an odds ratio confidence interval
In statpsych: Statistical Methods for Psychologists
size.ci.oddsratio R Documentation
Sample size for an odds ratio confidence interval
Description
Computes the sample size required to estimate an odds ratio with desired
confidence interval precision.
Usage
size.ci.oddsratio(alpha, p1, p2, or, r)
Arguments
alpha
alpha level for 1 - alpha confidence
p1
planning value for row 1 marginal proportion
p2
planning value for column 1 marginal proportion
or
planning value of odds ratio
r
desired upper to lower confidence interval endpoint ratio
Value
Returns the required sample size
Examples
size.ci.oddsratio(.05, .3, .2, 5.5, 3.0)
# Should return:
# Sample size
# 356
statpsych documentation built on April 4, 2025, 3:20 a.m.
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| size.ci.oddsratio | R Documentation |
Sample size for an odds ratio confidence interval
Description
Computes the sample size required to estimate an odds ratio with desired confidence interval precision.
Usage
size.ci.oddsratio(alpha, p1, p2, or, r)
Arguments
alpha |
alpha level for 1 - alpha confidence |
p1 |
planning value for row 1 marginal proportion |
p2 |
planning value for column 1 marginal proportion |
or |
planning value of odds ratio |
r |
desired upper to lower confidence interval endpoint ratio |
Value
Returns the required sample size
Examples
size.ci.oddsratio(.05, .3, .2, 5.5, 3.0)
# Should return:
# Sample size
# 356
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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