Count the number of patients in the table.

count patient_id;

Usage

pe(data, raw_patient_id)

Arguments

data

a table contian a "patient_id" column name or a similar column

raw_patient_id

raw patient_id ,use for count ;Non-standard input

Value

Total number of people after duplicate removal

Details

need to change the patient id column in the table to "paitent_id"

Examples

datatable1 = data.frame(
patient_id = paste0("patent",1:100),
visit_id  = paste0("visit",1:100))

datatable2 = data.frame(
 patient = paste0("patent",1:100),
 visit_id  = paste0("visit",1:100))

pe(datatable1)
#> [1] 100

pe(datatable2,patient)
#> [1] 100