View source: R/contains_exactly.R
| contains_exactly | R Documentation |
Check if the specified activity is present (contained) in a case for exactly n times.
The contains_exactly rule examines whether the supplied activity is present in a case for an exact number of n times.
contains_exactly(activity, n = 1)
activity |
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n |
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Other Cardinality rules:
absent(),
contains_between(),
contains()
library(bupaR)
library(eventdataR)
# Each patient should have exactly one registration activity instance.
patients %>%
check_rule(contains_exactly("Registration", n = 1))
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