Extract the last test done by a patient only

This extracts the last test only per patient and returns a new dataframe listing the patientID and the last test done

SurveilLastTest(dataframe, HospNum_Id, Endo_ResultPerformed)

Arguments

dataframe	dataframe
HospNum_Id	Patient ID
Endo_ResultPerformed	Date of the Endoscopy

See also

Other Basic Analysis - Surveillance Functions: HowManyOverTime(), SurveilFirstTest(), SurveilTimeByRow(), TimeToStatus()

Examples

cc <- SurveilLastTest(Myendo, "HospitalNumber", "Dateofprocedure")