{"id":"M143","variable":"date_onset","value":"43920","date":"2020-03-30"}
{"id":"M143","variable":"date_admit","value":"2020-04-01","date":"2020-04-01"}
{"id":"M143","variable":"date_exit","value":"2021.04.02","date":"2021-04-02","replacement":"2020-04-02","query":".x > as.Date(\"2021-01-01\")"}
{"id":"M345","variable":"date_onset","value":"43924","date":"2020-04-03"}
{"id":"M345","variable":"date_admit","value":"April 2020","replacement":".na","query":"Non-valid date"}
{"id":"M345","variable":"date_exit","value":"43940","date":"2020-04-19"}
{"id":"M623","variable":"date_onset","value":"2022-04-10","date":"2022-04-10","replacement":"2020-04-10","query":".x > as.Date(\"2021-01-01\"); date_onset > date_admit"}
{"id":"M623","variable":"date_admit","value":"2020-04-12","date":"2020-04-12","query":"date_onset > date_admit"}
{"id":"M623","variable":"date_exit","value":"Unknown","replacement":".na","query":"Non-valid date"}
{"id":"M190","variable":"date_onset","value":"24/04/2020","date":"2020-04-24"}
{"id":"M190","variable":"date_admit","value":"43952","date":"2020-05-01","query":"date_admit > date_exit"}
{"id":"M190","variable":"date_exit","value":"43941","date":"2020-04-20","replacement":"2020-05-20","query":"date_admit > date_exit"}