A data frame with 23571 rows and 20 variables
A dataset with variables as follows:
RGSTATUS N Was a screening visit/ADNI2 initial visit performed?
RGSOURCE N Who participated in this visit?
PTSTATUS N NA Participant Status:
VISTYPE N NA Visit Type:
CHANGTR N NA Would you like to change this visit's track or the participant's visit schedule?
CGTRACK N NA Please select from the following visit's tracks:
CGTRACK2 N NA Please select from the following visit schedule:
RID N Participant roster ID
SITEID N Site ID
VISCODE T Visit code
USERDATE S Date record created
RGCONDCT N Was this visit conducted?
RGREASON N Reason why the visit was not conducted:
RGOTHSPE T If Other, specify:
EXAMDATE D Examination Date
RGRESCRN N Is this a rescreen?
RGPREVID T If Yes, what was the participant's initial ID number?
USERDATE2 S Date record last updated