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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
11410
Variable Groups

Variable Groups

Variable group: C2/C2T Neuropsychological Battery Scores
Variables 190
animals
(C2 Q7a/C2T Q8a) Animals: Total number of animals named in 60 seconds
cerad1int
(C2 Q14c/C2T Q7b) Trial 1 -- Intrusions
cerad1read
14b. Trial 1 -- Can't read
cerad1rec
(C2 Q14a/C2T Q7a) Trial 1 -- Total recall
cerad2int
(C2 Q14f/C2T Q7d) 14f. Trial 2 -- Intrusions
cerad2read
14e. Trial 2 -- Can't read
cerad2rec
(C2 Q14d/C2T Q7c) Trial 2 -- Total recall
cerad3int
(C2 Q14i/C2T Q7f) Trial 3 -- Intrusions
cerad3read
14h. Trial 3 -- Can't read
cerad3rec
(C2 Q14g/C2T Q7e) Trial 3 -- Total recall
ceraddti
(C2 Q15a/C2T Q9a) Delay time (minutes)
ceradj6int
(C2 Q15c/C2T Q9c) J6 Word List Recall: Total number of intrusions
ceradj6rec
(C2 Q15b/C2T Q9b) J6 Word List Recall: Total number of words correctly recalled
ceradj7no
(C2 Q15e/C2T Q9e) J7 Word List Recognition: Total NO correct
ceradj7yes
(C2 Q15d/C2T Q9d) J7 Word List Recognition: Total YES correct
cogstat
(C2 Q17a/C2T Q15a.) Per the clinician (e.g., neuropsychologist, behavioral neurologist, or other suitably qualified clinician), based on the UDS neuropsychological examination, the participant's cognitive status is deemed:
craftcue
(C2 Q10d/C2T Q11d) Cue ("boy") needed
craftdre
(C2 Q10b/C2T Q11b) Total story units recalled, paraphrase scoring
craftdti
(C2 Q10c/C2T Q11c) Delay time (minutes)
craftdvr
(C2 Q10a/C2T Q11a) Total story units recalled, verbatim scoring
crafturs
3b. Total story units recalled, paraphrase scoring
craftvrs
3a. Total story units recalled, verbatim scoring
digbacct
(C2 Q6a/C2T Q5a) Number of correct trials
digbacls
(C2 Q6b/C2T Q5b) Longest span backward
digforct
(C2 Q5a/C2T Q4a) Number of correct trials
digforsl
(C2 Q5b/C2T Q4b) Longest span forward
frmdatec2c2t
0a. C2/C2T Neuropsychological Battery Test Scores - Form date
initialsc2c2t
0b. C2/C2T Neuropsychological Battery Test Scores - Examiner's initials
langc2c2t
0c. C2/C2T Neuropsychological Battery Test Scores - Language
loc_animals_c2
7a. Animals: Total number of animals named in 60 seconds
loc_animals_c2t
8a. Animals: Total number of animals named in 60 seconds
loc_c2_or_c2t
Which form are you administering?
loc_cerad1int_c2
14c. Trial 1 -- Intrusions
loc_cerad1int_c2t
7b. Trial 1 -- Intrusions
loc_cerad1rec_c2
14a. Trial 1 -- Total recall
loc_cerad1rec_c2t
7a. Trial 1 -- Total recall
loc_cerad2int_c2
14f. Trial 2 -- Intrusions
loc_cerad2int_c2t
7d. Trial 2 -- Intrusions
loc_cerad2rec_c2
14d. Trial 2 -- Total recall
loc_cerad2rec_c2t
7c. Trial 2 -- Total recall
loc_cerad3int_c2
14i. Trial 3 -- Intrusions
loc_cerad3int_c2t
7f. Trial 3 -- Intrusions
loc_cerad3rec_c2
14g. Trial 3 -- Total recall
loc_cerad3rec_c2t
7e. Trial 3 -- Total recall
loc_ceraddti_c2
15a. Delay time (minutes)
loc_ceraddti_c2t
9a. Delay time (minutes)
loc_ceradj6int_c2
15c. J6 Word List Recall: Total number of intrusions
loc_ceradj6int_c2t
9c. J6 Word List Recall: Total number of intrusions
loc_ceradj6rec_c2
15b. J6 Word List Recall: Total number of words correctly recalled
loc_ceradj6rec_c2t
9b. J6 Word List Recall: Total number of words correctly recalled
loc_ceradj7no_c2
15e. J7 Word List Recognition: Total NO correct
loc_ceradj7no_c2t
9e. J7 Word List Recognition: Total NO correct
loc_ceradj7yes_c2
15d. J7 Word List Recognition: Total YES correct
loc_ceradj7yes_c2t
9d. J7 Word List Recognition: Total YES correct
loc_res
(C2 Q18b/C2T Q16b) What makes this participant's responses less valid? (Select all that apply)
loc_rey1int_c2
12b. Trial 1 -- Intrusions
loc_rey1int_c2t
6b. Trial 1 -- Intrusions
loc_rey1rec_c2
12a. Trial 1 -- Total recall
loc_rey1rec_c2t
6a. Trial 1 -- Total recall
loc_rey2int_c2
12d.Trial 2 -- Intrusions
loc_rey2int_c2t
6d.Trial 2 -- Intrusions
loc_rey2rec_c2
12c. Trial 2 -- Total recall
loc_rey2rec_c2t
6c. Trial 2 -- Total recall
loc_rey3int_c2
12f. Trial 3 -- Intrusions
loc_rey3int_c2t
6f. Trial 3 -- Intrusions
loc_rey3rec_c2
12e. Trial 3 -- Total recall
loc_rey3rec_c2t
6e. Trial 3 -- Total recall
loc_rey4int_c2
12h. Trial 4 -- Intrusions
loc_rey4int_c2t
6h. Trial 4 -- Intrusions
loc_rey4rec_c2
12g. Trial 4 -- Total recall
loc_rey4rec_c2t
6g Trial 4 -- Total recall
loc_rey5int_c2
12j. Trial 5 -- Intrusions
loc_rey5int_c2t
6j. Trial 5 -- Intrusions
loc_rey5rec_c2
12i. Trial 5 -- Total recall
loc_rey5rec_c2t
6i. Trial 5 -- Total recall
loc_rey6int_c2
12n. Trial 6 -- Intrusions
loc_rey6int_c2t
6n. Trial 6 -- Intrusions
loc_rey6rec_c2
12m. Trial 6 -- Total recall
loc_rey6rec_c2t
6m. Trial 6 -- Total recall
loc_reybint_c2
12l. List B -- Intrusions
loc_reybint_c2t
6l. List B -- Intrusions
loc_reybrec_c2
12k. List B Total Recall
loc_reybrec_c2t
6k. List B Total Recall
loc_sum_mocatots
Sum for mocatots
loc_sum_mocbtots
Sum for mocbtots
loc_veg_c2
7b Vegetables: Total number of vegetables named in 60 seconds
loc_veg_c2t
8b. Vegetables: Total number of vegetables named in 60 seconds
loc_verbaltest_c2
12. Which verbal learning test was administered?
loc_verbaltest_c2t
6. Which verbal learning test was administered?
mintpcnc
16f. Phonemic cues: Number correct with cue
mintpcng
16e. Phonemic cues: Number given
mintscnc
16d. Semantic cues: Number correct with cue
mintscng
16c. Semantic cues: Number given
minttots
16a. Total score
minttotw
16b. Total correct without semantic cue
mocaabst
(C2 Q1s/C2T Q1j) Abstraction
mocacloc
1i. Visuospatial/executive -- Clock contour
mocacloh
1k. Visuospatial/executive -- Clock hands
mocaclon
1j. Visuospatial/executive -- Clock numbers
mocacomp
1a. Was any part of the MoCA administered?
mocacube
1h. Visuospatial/executive -- Cube
mocadigi
(C2 Q1n/C2T Q1e) Attention -- Digits
mocaflue
(C2 Q1r/C2T Q1i) Language -- Fluency
mocahear
(C2 Q1e/C2T Q1c) Participant was unable to complete one or more sections due to hearing impairment
mocalan
(C2 Q1c/C2T Q1b) Language of MoCA administration:
mocalanx
(C2 Q1c1/C2T Q1b1) Specify language of MoCA administration:
mocalett
(C2 Q1o/C2T Q1f) Attention -- Letter A
mocaloc
1b. MoCA was administered:
mocanami
1l. Language -- Naming
mocaorct
(C2 Q1bb/C2T Q1s) Orientation -- City
mocaordt
(C2 Q1w/C2T Q1n) Orientation -- Date
mocaordy
(C2 Q1z/C2T Q1q) Orientation -- Day
mocaormo
(C2 Q1x/C2T Q1o) Orientation -- Month
mocaorpl
(C2 Q1aa/C2T Q1r) Orientation -- Place
mocaoryr
(C2 Q1y/C2T Q1p) Orientation -- Year
mocareas
1a1. Enter reason code
mocarecc
(C2 Q1u/C2T Q1l) Delayed recall -- Category cue
mocarecn
(C2 Q1t/C2T Q1k) Delayed recall -- No cue
mocarecr
(C2 Q1v/C2T Q1m) Delayed recall -- Recognition
mocaregi
1m. Memory -- Registration (two trials)
mocarepe
(C2 Q1q/C2T Q1h) Language -- Repetition
mocaser7
(C2 Q1p/C2T Q1g) Attention -- Serial 7s
mocatots
1f. Total Raw Score -- Uncorrected
mocatrai
1g. Visuospatial/executive -- Trails
mocavis
1d. Participant was unable to complete one or more sections due to visual impairment:
mocbtots
1d. Total Raw Score -- Uncorrected
modec2c2t
0d. C2/C2T Neuropsychological Battery Test Scores - In-person or remote?
npsycloc
2a. The tests following the MoCA were administered:
npsylan
Language of test administration: (C2 - Q2b; C2T - Q2a)
npsylanx
(C2 Q2b1/C2T Q2a1) Language of test administration -- Other: Specify
otraila
10a. Part A: Total number of seconds to complete (if not finished by 100 seconds, enter 100) (If test not completed, enter reason code, 995-998. If test was skipped because optional, enter 888)
otrailb
10b. Part B: Total number of seconds to complete (if not finished by 300 seconds, enter 300) (If test not completed, enter reason code, 995-998. If test was skipped because optional, enter 888)
otrlali
10a2. Part A - Number of correct lines
otrlarr
10a1. Part A - Number of commission errors
otrlbli
10b2. Number of correct lines
otrlbrr
10b1. Part B - Number of commission errors
respasst
(C2 Q18b7/C2T Q16b7) Validity of participant's responses - Unapproved assistance
respdisn
(C2 Q18b4/C2T Q16b4) Validity of participant's responses - Lack of effort or disinterest
respdist
(C2 Q18b2/C2T Q16b2) Validity of participant's responses - Distractions
respemot
(C2 Q1861/C2T Q16b6) Validity of participant's responses - Emotional issues
respfatg
(C2 Q18b5/C2T Q16b5) Validity of participant's responses - Fatigue
resphear
(C2 Q18b1/C2T Q16b1) Validity of participant's responses - Hearing impairment
respintr
(C2 Q18b3/C2T Q16b3) Validity of participant's responses - Interruptions
respoth
(C2 Q18b8/C2T Q16b8) Validity of participant's responses - Other
respothx
(C2 Q18b8a/C2T Q16b8a) Validity of participant's responses - Other, specify
respval
(C2 Q18a/C2T Q16a) How valid do you think the participant's responses are?
rey1int
(C2 Q12b/C2T Q6b) Trial 1 -- Intrusions
rey1rec
(C2 Q12a/C2T Q6a) Trial 1 -- Total recall
rey2int
(C2 Q12d/C2T Q6d) Trial 2 -- Intrusions
rey2rec
(C2 Q12c/C2T Q6c) Trial 2 -- Total recall
rey3int
(C2 Q12f/C2T Q6f) Trial 3 -- Intrusions
rey3rec
(C2 Q12e/C2T Q6e) Trial 3 -- Total recall
rey4int
(C2 Q12h/C2T Q6h) Trial 4 -- Intrusions
rey4rec
(C2 Q12g/C2T Q6g) Trial 4 -- Total recall
rey5int
(C2 Q12j/C2T Q6j) Trial 5 -- Intrusions
rey5rec
(C2 Q12i/C2T Q6i) Trial 5 -- Total recall
rey6int
(C2 Q12n/C2T Q6n) Trial 6 -- Intrusions
rey6rec
(C2 Q12m/C2T Q6m) Trial 6 -- Total recall
reybint
(C2 Q12l/C2T Q6l) List B -- Intrusions
reybrec
(C2 Q12k/C2T Q6k) List B Total Recall
reydint
13b. Intrusions
reydrec
13a. Total delayed recall
reydti
13c. Delay time (minutes)
reyfpos
(C2 Q13f/C2T Q13e) . Recognition -- Total false positive
reymethod
13d. Method of recognition test administration
reytcor
(C2 Q13e/C2T Q13d) Recognition -- Total correct
rmmodec2c2t
0d1a. What modality was used to collect this remote 'C2/C2T Neuropsychological Battery Test Scores' form?
rmreasc2c2t
0d1. If 'C2/C2T Neuropsychological Battery Test Scores' form was completed remotely, specify reason
traila
8a. Part A: Total number of seconds to complete (if not finished by 150 seconds, enter 150)
trailali
8a2. Number of correct lines
trailarr
8a1. Number of commission errors
trailb
8b. Part B: Total number of seconds to complete (if not finished by 300 seconds, enter 300)
trailbli
8b2. Number of correct lines
trailbrr
8b1. Number of commission errors
udsbenrs
9b. Recognized original stimulus from among four options?
udsbentc
4a. Total score for copy of Benson figure
udsbentd
9a. Total score for drawing of Benson figure following 10- to 15-minute delay
udsverfc
(C2 Q11a/C2T Q12a) Number of correct F-words generated in 1 minute
udsverfn
(C2 Q11b/C2T Q12b) Number of F-words repeated in 1 minute
udsverlc
(C2 Q11d/C2T Q12d) Number of correct L-words generated in 1 minute
udsverln
(C2 Q11f/C2T Q12f) Number of non-L-words and rule violation errors in 1 minute
udsverlr
(C2 Q11e/C2T Q12e) Number of L-words repeated in one minute
udsvernf
(C2 Q11c/C2T Q12c) Number of non-F-words and rule violation errors in 1 minute
udsverte
(C2 Q11h/C2T Q12h) Total number of F-word and L-word repetition errors
udsverti
(C2 Q11i/C2T Q12i) Total number of non-F/L words and rule violation errors
udsvertn
(C2 Q11g/C2T Q12g) Total number of correct F-words and L-words
veg
(C2 Q7b/C2T Q8b) Vegetables: Total number of vegetables named in 60 seconds
verbaltest
(C2 Q12/C2T Q6) Which verbal learning test was administered?
vntpcnc
14b. Total correct with phonemic cue (if test was not completed, response code; 95-98, if test was skipped because optional (enter 88).
vnttotw
14a. Total correct without a cue (if test was not completed, response code; 95-98, if test was skipped because optional (enter 88).
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