we have visit, visit_date, and pt (patient) variables or fields are there pt    --     visit   --      visit_date 10005    visit 1        01-jan-2020 10005    visit 2        09-jan-2020 10005    visit 3        11-jan-2020 10005    visit 4         02-jan-2020 10005    visit 5        03-jan-2020 requirement is the date entered is wrong, the visit 1 date always smaller than visit 2 , same way visit 2 dae smaller than visit 3 but here visit 4 date is date shd be gretaer than visit 3 .. how to find these type of patient information date information in our raw data ... View more