Create a statistics output function
Arguments
- variable
variable(s) used to compute the statistics, character vector
- strata
named vector with the strata to use, default is c(SCENARIO="all", ARM="all")
- stats
character vector of statistics to compute. Supported: "median", "mean", or percentiles like "p5", "p95", "p2.5", "p97.5". Default is c("p5", "median", "p95").
- name
name of the output function. Default is 'stats_<variable>'.
