Enrollment Tracking



A data frame with 961 rows and 14 variables


A dataset with variables as follows:

  • RID N Participant roster ID

  • SITEID N Site ID

  • VISCODE T Visit code

  • USERDATE S Date record created

  • DATE D Date

  • CITY T City

  • STATE T State/Province

  • COUNTRY T Country

  • REFSOURCE T Please check all that apply when asking the volunteer where they heard about the ADNI study:

  • RADIOSPE T Radio Station Specify:

  • OTHERSPE T Other Specify:

  • USERDATE2 S Date record last updated