findsamplesize provides several functions to calculate sample sizes in diagnostic studies, as well as cluster randomized trials.
You can install the development version of findsamplesize like so:
devtools::install(file.path(getwd(),'findsamplesize') )
library(findsamplesize)This is a basic example which shows you how to calculate the sample size:
library(findsamplesize)
sample_size_calculation(sen_spe= 0.8, alpha=0.05, power=0.8, margin=0.05, prevalence = NULL, prevalence_power = NULL, performance_characteristic = "sen")
#> [1] 503