import_trial_times

path_study_dates <- paste0("../data/Study_dates_MeLiDos_", site, ".xlsx")

#import table with study times
Study_dates <- read_excel(path_study_dates)
#gather the important information
Study_dates <-
  Study_dates |> 
    rename(Id = subjectID_device, start = datetime_trial_start, end = datetime_trial_end) |> 
    select(Id, start, end) |> 
    mutate(across(c(start, end), \(x) force_tz(x, melidos_tzs[site])),
           trial = TRUE) |> 
  group_by(Id)

Exporting values

trial_times <- Study_dates
save(trial_times, file = "../data/imported/trial_times.RData")