高校数学の質問スレ（医者・東大卒専用） Part438 (991ﾚｽ)
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827: 05/05(月)19:08 ID:LDY1RQtT(2/4) AAS
Description:

The `riskratio.boot` function in R estimates the risk ratio between two groups and provides its Highest Density Interval (HDI) using a bootstrap resampling approach. It takes the counts of events and the total number of observations for each of the two groups as input.

Usage:

riskratio.boot(r1, r2, n1, n2, nboot = 5000, conf.level = 0.95, verbose = FALSE)

Arguments:

* `r1`: The number of events in the first group.
* `r2`: The number of events in the second group.
* `n1`: The total number of observations in the first group.
* `n2`: The total number of observations in the second group.
* `nboot`: The number of bootstrap replicates to perform (default is 5000). A larger number of replicates generally provides more stable estimates.
* `conf.level`: The credibility level for the Highest Density Interval (HDI) (default is 0.95, corresponding to a 95% HDI).
* `verbose`: A logical value indicating whether to display a plot of the bootstrap distribution of the risk ratio (default is `FALSE`). If `TRUE`, it assumes a script named `plotpost.R` is available in the working directory for plotting.

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