Questionnaires derived dataset.
Usage
data(QS)Source
For more details see the help vignette:
vignette(topic = 'ADNIMERGE2-Derived-Data', package = 'ADNIMERGE2')
Details
STUDYID character Study Identifier ; , with character options: ADNI
DOMAIN character Domain Abbrevation , with character options: QS
USUBJID character Unique Subject Identifier
QSSEQ integer Sequence Number Range value: 1, ..., 372
QSGRPID factor Group ID Study Protocol of Data Collection; , with factor levels: ADNI1, ADNIGO, ADNI2, ADNI3, ADNI4
QSTESTCD character Question Short Name
QSTEST character Question Name
QSCAT character Category of Question
QSORRES character Finding in Original Units
QSSTRESC character Character Result/Finding in Std Format
QSSTRESN numeric Numeric Finding in Standard Units Range value: -500, ..., 996
QSSTAT character Completion Status , with character options: NOT DONE
QSREASND character Reason Not Performed , with character options: Unknown, Box not checked, Other Reason, Participant Unable for Cognitive Reasons, Participant is unable to complete the GDS based on the clinician's best judgement., Site Error, Participant Unable for Other Reasons (Physical, auditory, etc.), Box checked, Participant/Study Partner Refused, Equipment related issue
QSBLFL character Baseline Flag , with character options: Y
QSDRVFL character Derived Flag , with character options: Yes
VISITNUM numeric Visit Number Range value: -2, ..., 47
VISIT character Visit Name
EPOCH character Epoch , with character options: Follow-up, Baseline, Screening
QSDTC Date Date/Time of Finding Date: YYY-MM-DD
QSDY integer Study Day of Finding Range value: -365625, ..., 35075