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Uniform Data Set version 4
UDSv4 - Template

United States
Reference ID
USDv4
Producer(s)
National Alzheimer’s Coordinating Center (NACC) and the NIA-funded ADRC network
Collections
Clinical Trial
Metadata
DDI/XML JSON
Created on
Jul 02, 2026
Last modified
Jul 07, 2026
Page views
11414
Variable Groups

Variable Groups

Variable group: B8 Neurological Examination Findings
Variables 45
alienlimb
4i. Alien limb phenomenon {loc_alienlimb_lastvis}
ampmotor
3j. Decrement in amplitude of fine motor movements {loc_ampmotor_lastvis}
aphasia
4h. Aphasia (disregard complaints of mild dysnomia if not viewed as reflecting a clinically significant change) {loc_aphasia_lastvis}
apraxgaze
4n. Apraxia of gaze {loc_apraxgaze_lastvis}
apraxsp
4q. Apraxia of speech {loc_apraxsp_lastvis}
axialrig
3k. Axial rigidity {loc_axialrig_lastvis}
b8_neurological_examination
_findings_complete
Complete?
chorea
3i. Chorea {loc_chorea_lastvis}
dysarth
4p. Dysarthria* {loc_dysarth_lastvis}
dystarm
3g. Limb dystonia - arm {loc_dystarm_lastvis}
dystleg
3h. Limb dystonia - leg {loc_dystleg_lastvis}
frmdateb8
0a. B8 Evaluation Form: Neurological Examination Findings - Form date
gaitabn
5. Gait
gaitfind
5a. Finding:
gaitothrx
Other:
hspatneg
4j. Hemispatial neglect {loc_hspatneg_lastvis}
initialsb8
0b. B8 Evaluation Form: Neurological Examination Findings - Examiner's initials
langb8
0c. B8 Evaluation Form: Neurological Examination Findings - Language
limbaprax
4a. Limb apraxia {loc_limbaprax_lastvis}
limbatax
4e. Limb ataxia {loc_limbatax_lastvis}
lmndist
4c. Face or limb findings in an LMN distribution* {loc_lmndist_lastvis}
masking
3m. Facial masking {loc_masking_lastvis}
modeb8
0d. B8 Evaluation Form: Neurological Examination Findings - In-person or remote?
myoclon
4f. Myoclonus {loc_myoclon_lastvis}
neurexam
1. Which of the following was completed on this participant?
normnrexam
2. Were there abnormal neurological exam findings?
opticatax
4m. Optic ataxia {loc_opticatax_lastvis}
othersign
4. Cortical/Pyramidal/Other Signs
parksign
3. Parkinsonian Signs
postinst
3l. Postural instability {loc_postinst_lastvis}
pspoagno
4k. Prosopagnosia {loc_pspoagno_lastvis}
rigidarm
3e. Limb rigidity - arm {loc_rigidarm_lastvis}
rigidleg
3f. Limb rigidity - leg {loc_rigidleg_lastvis}
rmmodeb8
0d1a. What modality was used to collect this remote 'B8 Evaluation Form: Neurological Examination Findings' form?
rmreasb8
0d1. If 'B8 Evaluation Form: Neurological Examination Findings' form was completed remotely, specify reason
slowingfm
3a. Slowing of fine motor movements {loc_slowingfm_lastvis}
smtagno
4l. Simultanagnosia {loc_smtagno_lastvis}
stooped
3n. Stooped posture {loc_stooped_lastvis}
tremkine
3d. Limb tremor - kinetic {loc_tremkine_lastvis}
trempost
3c. Limb tremor - postural {loc_trempost_lastvis}
tremrest
3b. Limb tremor at rest {loc_tremrest_lastvis}
umndist
4b. Face or limb findings in UMN distribution* {loc_umndist_lastvis}
unisomato
4g. Unilateral Somatosensory loss (localized to the brain; disregard sensory changes localized to the spinal cord or peripheral nerves) {loc_unisomato_lastvis}
vfieldcut
4d. Visual field cut {loc_vfieldcut_lastvis}
vhgazepal
4o. Vertical +/- horizontal gaze palsy** {loc_vhgazepal_lastvis}
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