Usage
strata(x)
# S4 method for class 'Trial'
strata(x)
Arguments
- x
A Trial object.
Value
Named list of prognostic factors and admissible levels.
Examples
strata(Trial(
"T1", c("active", "control"),
strata = list(site = c("north", "south"))
))
#> $site
#> [1] "north" "south"
#>