Check if the specified activity is present (contained) in a case.
contains rule examines whether the supplied
activity is present in a case or not.
n can be used to set a minimum number of occurences that should be present in each case.
contains(activity, n = 1)
Other Cardinality rules:
library(bupaR) library(eventdataR) # Each patient should be registered at least once. patients %>% check_rule(contains("Registration")) # Check whether some patients have received 2 or more blood tests. patients %>% check_rule(contains("Blood test", n = 2))
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