Check for precedence between two activities.
If activity B occured, it should be preceded by activity A in the same case.
precedence(activity_a, activity_b)
activity_a |
Activity A. A character vector of length one. This should be an activity of the event log supplied to 'check_rule'. |
activity_b |
Activity B. A character vector of length one. This should be an activity of the event log supplied to 'check_rule'. |
Other Declarative Rules:
absent(),
and(),
contains_between(),
contains_exactly(),
contains(),
ends(),
responded_existence(),
response(),
starts(),
succession(),
xor()
library(bupaR)
library(eventdataR)
# A MRI Scan should be preceeded by a Blood test.
patients %>%
check_rule(precedence("Blood test","MRI SCAN"))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.