NDA Help Center

Login Dialog

Frequently Asked Questions


NDA Help Center

Filter Cart

The Filter Cart provides a powerful way to query and access data for which you may be interested.  

A few points related to the filter cart are important to understand with the NDA Query/Filter implementation: 

First, the filter cart is populated asyncronously.  So, when you run a query, it may take a moment to populate but this will happen in the background so you can define other queries during this time.  

When you are adding your first filter, all data associated with your query will be added to the filter cart (whether it be a collection, a concept, a study, a data structure/elment or subjects). Not all data structures or collections will necessarily be displayed.  For example, if you select the NDA imaging structure image03, and further restrict that query to scan_type fMRI, only fMRI images will appear and only the image03 structure will be shown.  To see other data structures, select "Find All Subject Data" which will query all data for those subjects. When a secord or third filter is applied, an AND condition is used.  A subject must exist in all filters.  If the subject does not appear in any one filter, that subjects data will not be included in your filter cart. If that happens, clear your filter cart, and start over.  

It is best to package more data than you need and access those data using other tools, independent of the NDA (e.g. miNDAR snapshot), to limit the data selected.  If you have any questions on data access, are interested in using avaialble web services, or need help accessing data, please contact us for assistance.  

Frequently Asked Questions



Reset Password

NDA provides a single access to de-identified autism research data. For permission to download data, you will need an NDA account with approved access to NDA or a connected repository (AGRE, IAN, or the ATP). For NDA access, you need to be a research investigator sponsored by an NIH recognized institution with federal wide assurance. See Request Access for more information.

Warning Notice

This is a U.S. Government computer system, which may be accessed and used only for authorized Government business by authorized personnel. Unauthorized access or use of this computer system may subject violators to criminal, civil, and/or administrative action. All information on this computer system may be intercepted, recorded, read, copied, and disclosed by and to authorized personnel for official purposes, including criminal investigations. Such information includes sensitive data encrypted to comply with confidentiality and privacy requirements. Access or use of this computer system by any person, whether authorized or unauthorized, constitutes consent to these terms. There is no right of privacy in this system.

Update Password

You have logged in with a temporary password. Please update your password. Passwords must contain 8 or more characters and must contain at least 3 of the following types of characters:

  • Uppercase
  • Lowercase
  • Numbers
  • Special Characters limited to: %,_,!,@,#,$,-,%,&,+,=,),(,*,^,:,;

Subscribe to our mailing list

Mailing List(s)
Email Format

You are now leaving the NIMH Data Archive (NDA) web site to go to:

Click on the address above if the page does not change within 10 seconds.


NDA is not responsible for the content of this external site and does not monitor other web sites for accuracy.

Accept Terms
Filter Cart
No filters selected
Value Range
Data Structures with shared data
No filters have been selected
Switch User

Brief Assessment of Cognition



Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*
src_subject_idString20RequiredSubject ID how it's defined in lab/projectbid, subjectid
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired fielddate_np, date_of_rating
interview_ageIntegerRequiredAge in months at the time of the interview/test/sampling/imaging.0 :: 1260Age is rounded to chronological month. If the research participant is 15-days-old at time of interview, the appropriate value would be 0 months. If the participant is 16-days-old, the value would be 1 month.age
sexString20RequiredSex of the subjectM;FM = Male; F = Femalegender
visitidIntegerRecommendedMetaTrial Visit IDSystem variable: unique code for each type of visit -use to merge filesbaca0b
baca1IntegerRecommendedRecord the word list version used1::8There are 8 versions of the word lists to choose from. Each version has 15 words. Use the same version for all five trials within a testing procedure. Patients will be presented with 15 words and then asked to recall as many as possible. This is done 5 times.vm_version
ccc2englishIntegerRecommendedDoes the subject speak English as a primary language?0;1;-90 = No; 1 = Yes; -9 = Missing valuebaca2, english_primary
baca3IntegerRecommendedTrial 10::15Record the number of words the participant recalls (1-15) during each of the five trials. Word repetitions do not receive credit. Addition or omission of simple suffixes (�s� or �ed�) that do not change the meaning of the word, DO receive credit.bacs_vm_trial_1
baca4IntegerRecommendedTrial 20::15Record the number of words the participant recalls (1-15) during each of the five trials. Word repetitions do not receive credit. Addition or omission of simple suffixes (�s� or �ed�) that do not change the meaning of the word, DO receive credit.bacs_vm_trial_2
baca5IntegerRecommendedTrial 30::15Record the number of words the participant recalls (1-15) during each of the five trials. Word repetitions do not receive credit. Addition or omission of simple suffixes (�s� or �ed�) that do not change the meaning of the word, DO receive credit.bacs_vm_trial_3
baca6IntegerRecommendedTrial 40::15Record the number of words the participant recalls (1-15) during each of the five trials. Word repetitions do not receive credit. Addition or omission of simple suffixes (�s� or �ed�) that do not change the meaning of the word, DO receive credit.bacs_vm_trial_4
baca7IntegerRecommendedTrial 50::15Record the number of words the participant recalls (1-15) during each of the five trials. Word repetitions do not receive credit. Addition or omission of simple suffixes (�s� or �ed�) that do not change the meaning of the word, DO receive credit.bacs_vm_trial_5
version_formString100RecommendedForm used/assessment name
visdayIntegerRecommendedNumber of days from study baseline to date of visit
fseqnoIntegerRecommendedSequence Number0::999The FSEQNO variable in the ADJ form has a special interpretation compared to other forms. For example, ADJ FSEQNO of '1' can be thought of as being '001', FSEQNO of '2' can be thought of as being '002', and FSEQNO of '3' can be thought of as being '003'. The first digit of FSEQNO relates to the corresponding ENF sequence number at that visit and the third digit relates to the specific adjudicator who completed the adjudication form.
visitString50RecommendedVisit name
siteString101RecommendedSiteStudy Site
medhx_colorblindIntegerRecommendedColor blind?0;10 = No, 1 = Yescolorblind
left_handIntegerRecommendedIs the patient Left-Handed?0;10=No; 1=Yeslefthanded
commentsString4,000RecommendedComments about assessmentnotes
bacs_vmt1_1IntegerRecommendedBACS Verbal Memory Trial 1: word 10;10=Incorrect; 1=Correct
bacs_vmt1_2IntegerRecommendedBACS Verbal Memory Trial 1: word 20;10=Incorrect; 1=Correct
bacs_vmt1_3IntegerRecommendedBACS Verbal Memory Trial 1: word 30;10=Incorrect; 1=Correct
bacs_vmt1_4IntegerRecommendedBACS Verbal Memory Trial 1: word 40;10=Incorrect; 1=Correct
bacs_vmt1_5IntegerRecommendedBACS Verbal Memory Trial 1: word 50;10=Incorrect; 1=Correct
bacs_vmt1_6IntegerRecommendedBACS Verbal Memory Trial 1: word 60;10=Incorrect; 1=Correct
bacs_vmt1_7IntegerRecommendedBACS Verbal Memory Trial 1: word 70;10=Incorrect; 1=Correct
bacs_vmt1_8IntegerRecommendedBACS Verbal Memory Trial 1: word 80;10=Incorrect; 1=Correct
bacs_vmt1_9IntegerRecommendedBACS Verbal Memory Trial 1: word 90;10=Incorrect; 1=Correct
bacs_vmt1_10IntegerRecommendedBACS Verbal Memory Trial 1: word 100;10=Incorrect; 1=Correct
bacs_vmt1_11IntegerRecommendedBACS Verbal Memory Trial 1: word 110;10=Incorrect; 1=Correct
bacs_vmt1_12IntegerRecommendedBACS Verbal Memory Trial 1: word 120;10=Incorrect; 1=Correct
bacs_vmt1_13IntegerRecommendedBACS Verbal Memory Trial 1: word 130;10=Incorrect; 1=Correct
bacs_vmt1_14IntegerRecommendedBACS Verbal Memory Trial 1: word 140;10=Incorrect; 1=Correct
bacs_vmt1_15IntegerRecommendedBACS Verbal Memory Trial 1: word 150;10=Incorrect; 1=Correct
bacs_vmt2_1IntegerRecommendedBACS Verbal Memory Trial 2: word 10;10=Incorrect; 1=Correct
bacs_vmt2_2IntegerRecommendedBACS Verbal Memory Trial 2: word 20;10=Incorrect; 1=Correct
bacs_vmt2_3IntegerRecommendedBACS Verbal Memory Trial 2: word 30;10=Incorrect; 1=Correct
bacs_vmt2_4IntegerRecommendedBACS Verbal Memory Trial 2: word 40;10=Incorrect; 1=Correct
bacs_vmt2_5IntegerRecommendedBACS Verbal Memory Trial 2: word 50;10=Incorrect; 1=Correct
bacs_vmt2_6IntegerRecommendedBACS Verbal Memory Trial 2: word 60;10=Incorrect; 1=Correct
bacs_vmt2_7IntegerRecommendedBACS Verbal Memory Trial 2: word 70;10=Incorrect; 1=Correct
bacs_vmt2_8IntegerRecommendedBACS Verbal Memory Trial 2: word 80;10=Incorrect; 1=Correct
bacs_vmt2_9IntegerRecommendedBACS Verbal Memory Trial 2: word 90;10=Incorrect; 1=Correct
bacs_vmt2_10IntegerRecommendedBACS Verbal Memory Trial 2: word 100;10=Incorrect; 1=Correct
bacs_vmt2_11IntegerRecommendedBACS Verbal Memory Trial 2: word 110;10=Incorrect; 1=Correct
bacs_vmt2_12IntegerRecommendedBACS Verbal Memory Trial 2: word 120;10=Incorrect; 1=Correct
bacs_vmt2_13IntegerRecommendedBACS Verbal Memory Trial 2: word 130;10=Incorrect; 1=Correct
bacs_vmt2_14IntegerRecommendedBACS Verbal Memory Trial 2: word 140;10=Incorrect; 1=Correct
bacs_vmt2_15IntegerRecommendedBACS Verbal Memory Trial 2: word 150;10=Incorrect; 1=Correct
bacs_vmt3_1IntegerRecommendedBACS Verbal Memory Trial 3: word 10;10=Incorrect; 1=Correct
bacs_vmt3_2IntegerRecommendedBACS Verbal Memory Trial 3: word 20;10=Incorrect; 1=Correct
bacs_vmt3_3IntegerRecommendedBACS Verbal Memory Trial 3: word 30;10=Incorrect; 1=Correct
bacs_vmt3_4IntegerRecommendedBACS Verbal Memory Trial 3: word 40;10=Incorrect; 1=Correct
bacs_vmt3_5IntegerRecommendedBACS Verbal Memory Trial 3: word 50;10=Incorrect; 1=Correct
bacs_vmt3_6IntegerRecommendedBACS Verbal Memory Trial 3: word 60;10=Incorrect; 1=Correct
bacs_vmt3_7IntegerRecommendedBACS Verbal Memory Trial 3: word 70;10=Incorrect; 1=Correct
bacs_vmt3_8IntegerRecommendedBACS Verbal Memory Trial 3: word 80;10=Incorrect; 1=Correct
bacs_vmt3_9IntegerRecommendedBACS Verbal Memory Trial 3: word 90;10=Incorrect; 1=Correct
bacs_vmt3_10IntegerRecommendedBACS Verbal Memory Trial 3: word 100;10=Incorrect; 1=Correct
bacs_vmt3_11IntegerRecommendedBACS Verbal Memory Trial 3: word 110;10=Incorrect; 1=Correct
bacs_vmt3_12IntegerRecommendedBACS Verbal Memory Trial 3: word 120;10=Incorrect; 1=Correct
bacs_vmt3_13IntegerRecommendedBACS Verbal Memory Trial 3: word 130;10=Incorrect; 1=Correct
bacs_vmt3_14IntegerRecommendedBACS Verbal Memory Trial 3: word 140;10=Incorrect; 1=Correct
bacs_vmt3_15IntegerRecommendedBACS Verbal Memory Trial 3: word 150;10=Incorrect; 1=Correct
bacs_vmt4_1IntegerRecommendedBACS Verbal Memory Trial 4: word 10;10=Incorrect; 1=Correct
bacs_vmt4_2IntegerRecommendedBACS Verbal Memory Trial 4: word 20;10=Incorrect; 1=Correct
bacs_vmt4_3IntegerRecommendedBACS Verbal Memory Trial 4: word 30;10=Incorrect; 1=Correct
bacs_vmt4_4IntegerRecommendedBACS Verbal Memory Trial 4: word 40;10=Incorrect; 1=Correct
bacs_vmt4_5IntegerRecommendedBACS Verbal Memory Trial 4: word 50;10=Incorrect; 1=Correct
bacs_vmt4_6IntegerRecommendedBACS Verbal Memory Trial 4: word 60;10=Incorrect; 1=Correct
bacs_vmt4_7IntegerRecommendedBACS Verbal Memory Trial 4: word 70;10=Incorrect; 1=Correct
bacs_vmt4_8IntegerRecommendedBACS Verbal Memory Trial 4: word 80;10=Incorrect; 1=Correct
bacs_vmt4_9IntegerRecommendedBACS Verbal Memory Trial 4: word 90;10=Incorrect; 1=Correct
bacs_vmt4_10IntegerRecommendedBACS Verbal Memory Trial 4: word 100;10=Incorrect; 1=Correct
bacs_vmt4_11IntegerRecommendedBACS Verbal Memory Trial 4: word 110;10=Incorrect; 1=Correct
bacs_vmt4_12IntegerRecommendedBACS Verbal Memory Trial 4: word 120;10=Incorrect; 1=Correct
bacs_vmt4_13IntegerRecommendedBACS Verbal Memory Trial 4: word 130;10=Incorrect; 1=Correct
bacs_vmt4_14IntegerRecommendedBACS Verbal Memory Trial 4: word 140;10=Incorrect; 1=Correct
bacs_vmt4_15IntegerRecommendedBACS Verbal Memory Trial 4: word 150;10=Incorrect; 1=Correct
bacs_vmt5_1IntegerRecommendedBACS Verbal Memory Trial 5: word 10;10=Incorrect; 1=Correct
bacs_vmt5_2IntegerRecommendedBACS Verbal Memory Trial 5: word 20;10=Incorrect; 1=Correct
bacs_vmt5_3IntegerRecommendedBACS Verbal Memory Trial 5: word 30;10=Incorrect; 1=Correct
bacs_vmt5_4IntegerRecommendedBACS Verbal Memory Trial 5: word 40;10=Incorrect; 1=Correct
bacs_vmt5_5IntegerRecommendedBACS Verbal Memory Trial 5: word 50;10=Incorrect; 1=Correct
bacs_vmt5_6IntegerRecommendedBACS Verbal Memory Trial 5: word 60;10=Incorrect; 1=Correct
bacs_vmt5_7IntegerRecommendedBACS Verbal Memory Trial 5: word 70;10=Incorrect; 1=Correct
bacs_vmt5_8IntegerRecommendedBACS Verbal Memory Trial 5: word 80;10=Incorrect; 1=Correct
bacs_vmt5_9IntegerRecommendedBACS Verbal Memory Trial 5: word 90;10=Incorrect; 1=Correct
bacs_vmt5_10IntegerRecommendedBACS Verbal Memory Trial 5: word 100;10=Incorrect; 1=Correct
bacs_vmt5_11IntegerRecommendedBACS Verbal Memory Trial 5: word 110;10=Incorrect; 1=Correct
bacs_vmt5_12IntegerRecommendedBACS Verbal Memory Trial 5: word 120;10=Incorrect; 1=Correct
bacs_vmt5_13IntegerRecommendedBACS Verbal Memory Trial 5: word 130;10=Incorrect; 1=Correct
bacs_vmt5_14IntegerRecommendedBACS Verbal Memory Trial 5: word 140;10=Incorrect; 1=Correct
bacs_vmt5_15IntegerRecommendedBACS Verbal Memory Trial 5: word 150;10=Incorrect; 1=Correct
bacs_ds1aIntegerRecommendedDigit Sequencing: 1a. 5,20;10=Incorrect; 1=Correct
bacs_ds1bIntegerRecommendedDigit Sequencing: 1b. 3,90;10=Incorrect; 1=Correct
bacs_ds1cIntegerRecommendedDigit Sequencing: 1c. 1,80;10=Incorrect; 1=Correct
bacs_ds1dIntegerRecommendedDigit Sequencing: 1d. 4,60;10=Incorrect; 1=Correct
bacs_ds1totIntegerRecommendedDigit Sequencing: 1 Totalbacs_ds_trial_1, bacs_ds_trial_2, bacs_ds_trial_3, bacs_ds_trial_4, bacs_ds_trial_5, bacs_ds_trial_6, bacs_ds_trial_7
bacs_ds2aIntegerRecommendedDigit Sequencing: 2a. 9,6,10;10=Incorrect; 1=Correct
bacs_ds2bIntegerRecommendedDigit Sequencing: 2b. 3,6,20;10=Incorrect; 1=Correct
bacs_ds2cIntegerRecommendedDigit Sequencing: 2c. 4,2,70;10=Incorrect; 1=Correct
bacs_ds2dIntegerRecommendedDigit Sequencing: 2d. 5,8,40;10=Incorrect; 1=Correct
bacs_ds2totIntegerRecommendedDigit Sequencing: 2 Total
bacs_ds3aIntegerRecommendedDigit Sequencing: 3a. 3,4,8,60;10=Incorrect; 1=Correct
bacs_ds3bIntegerRecommendedDigit Sequencing: 3b. 9,2,6,80;10=Incorrect; 1=Correct
bacs_ds3cIntegerRecommendedDigit Sequencing: 3c. 7,3,1,40;10=Incorrect; 1=Correct
bacs_ds3dIntegerRecommendedDigit Sequencing: 3d. 5,2,6,10;10=Incorrect; 1=Correct
bacs_ds3totIntegerRecommendedDigit Sequencing: 3 Total
bacs_ds4aIntegerRecommendedDigit Sequencing: 4a. 4,1,5,7,80;10=Incorrect; 1=Correct
bacs_ds4bIntegerRecommendedDigit Sequencing: 4b. 3,2,7,9,80;10=Incorrect; 1=Correct
bacs_ds4cIntegerRecommendedDigit Sequencing: 4c. 4,5,2,9,70;10=Incorrect; 1=Correct
bacs_ds4dIntegerRecommendedDigit Sequencing: 4d. 6,3,8,1,70;10=Incorrect; 1=Correct
bacs_ds4totIntegerRecommendedDigit Sequencing: 4 Total
bacs_ds5aIntegerRecommendedDigit Sequencing: 5a. 1,4,2,6,9,50;10=Incorrect; 1=Correct
bacs_ds5bIntegerRecommendedDigit Sequencing: 5b. 2,3,7,8,1,60;10=Incorrect; 1=Correct
bacs_ds5cIntegerRecommendedDigit Sequencing: 5c. 1,2,9,6,8,40;10=Incorrect; 1=Correct
bacs_ds5dIntegerRecommendedDigit Sequencing: 5d. 9,2,7,5,8,30;10=Incorrect; 1=Correct
bacs_ds5totIntegerRecommendedDigit Sequencing: 5 Total
bacs_ds6aIntegerRecommendedDigit Sequencing: 6a. 3,4,2,6,7,5,90;10=Incorrect; 1=Correct
bacs_ds6bIntegerRecommendedDigit Sequencing: 6b. 9,1,3,4,6,7,80;10=Incorrect; 1=Correct
bacs_ds6cIntegerRecommendedDigit Sequencing: 6c. 2,8,4,7,1,6,50;10=Incorrect; 1=Correct
bacs_ds6dIntegerRecommendedDigit Sequencing: 6d. 1,6,2,9,8,5,40;10=Incorrect; 1=Correct
bacs_ds6totIntegerRecommendedDigit Sequencing: 6 Total
bacs_ds7aIntegerRecommendedDigit Sequencing: 7a. 1,2,4,3,6,5,8,90;10=Incorrect; 1=Correct
bacs_ds7bIntegerRecommendedDigit Sequencing: 7b. 2,3,1,4,5,8,9,70;10=Incorrect; 1=Correct
bacs_ds7cIntegerRecommendedDigit Sequencing: 7c. 6,2,1,4,9,3,7,50;10=Incorrect; 1=Correct
bacs_ds7dIntegerRecommendedDigit Sequencing: 7d. 8,6,9,4,1,3,7,50;10=Incorrect; 1=Correct
bacs_ds7totIntegerRecommendedDigit Sequencing: 7 Total
bacs_dstotalscoreIntegerRecommendedTotal Digit Sequencing Scorebacs_ds_total, bacsds, dsrawscore
bacs_tmt1IntegerRecommendedNumber of Tokens left on the tablebacs_tm_leftontable
bacs_tmt2IntegerRecommendedTotal Number of Tokens placed in containerbacs_tm_incontainer
bacs_tmt3IntegerRecommendedNumber of Tokens incorrectly placed in containerbacs_tm_incorrect
bacs_tmt4IntegerRecommendedNumber of Tokens correctly placed in containerbacs_tm_correct
bacs_sf_totalIntegerRecommendedSemantic Fluency TotalTotal number of correct words in the given category within 60 secondsbacs_fluency_animal
bacs_lf_1IntegerRecommendedLetter Fluency Total 1Total number of correct words starting with the letter of the alphabet provided within 60 secondsbacs_fluency_f
bacs_lf_2IntegerRecommendedLetter Fluency Total 2Total number of correct words starting with the letter of the alphabet provided within 60 secondsbacs_fluency_s
bacs_sc_totalIntegerRecommendedSymbol-Coding Totalbacs_sc_correct, bacssc, scrawscore
bacs_tl_1IntegerRecommendedTower of London: Item 10;10=Incorrect; 1=Correct
bacs_tl_2IntegerRecommendedTower of London: Item 20;10=Incorrect; 1=Correct
bacs_tl_3IntegerRecommendedTower of London: Item 30;10=Incorrect; 1=Correct
bacs_tl_4IntegerRecommendedTower of London: Item 40;10=Incorrect; 1=Correct
bacs_tl_5IntegerRecommendedTower of London: Item 50;10=Incorrect; 1=Correct
bacs_tl_6IntegerRecommendedTower of London: Item 60;10=Incorrect; 1=Correct
bacs_tl_7IntegerRecommendedTower of London: Item 70;10=Incorrect; 1=Correct
bacs_tl_8IntegerRecommendedTower of London: Item 80;10=Incorrect; 1=Correct
bacs_tl_9IntegerRecommendedTower of London: Item 90;10=Incorrect; 1=Correct
bacs_tl_10IntegerRecommendedTower of London: Item 100;10=Incorrect; 1=Correct
bacs_tl_11IntegerRecommendedTower of London: Item 110;10=Incorrect; 1=Correct
bacs_tl_12IntegerRecommendedTower of London: Item 120;10=Incorrect; 1=Correct
bacs_tl_13IntegerRecommendedTower of London: Item 130;10=Incorrect; 1=Correct
bacs_tl_14IntegerRecommendedTower of London: Item 140;10=Incorrect; 1=Correct
bacs_tl_15IntegerRecommendedTower of London: Item 150;10=Incorrect; 1=Correct
bacs_tl_16IntegerRecommendedTower of London: Item 160;10=Incorrect; 1=Correct
bacs_tl_17IntegerRecommendedTower of London: Item 170;10=Incorrect; 1=Correct
bacs_tl_18IntegerRecommendedTower of London: Item 180;10=Incorrect; 1=Correct
bacs_tl_19IntegerRecommendedTower of London: Item 190;10=Incorrect; 1=Correct
bacs_tl_20IntegerRecommendedTower of London: Item 200;10=Incorrect; 1=Correct
bacs_tl_21IntegerRecommendedTower of London: Item 210;10=Incorrect; 1=Correct
bacs_tl_22IntegerRecommendedTower of London: Item 220;10=Incorrect; 1=Correct
bacs_tl_totalIntegerRecommendedTower of London: Total scorebacs_tl_correct, bacstl, tlrawscore
bacs_tl_versionString2RecommendedTower of London versionA;Btl_version
baseline_a_002String100RecommendedInterview Start Time:bacsbegan
stoptimeString10RecommendedStop timebacscomp
cmstpdtDateRecommendedStop Date
cmstrtdtDateRecommendedStart Date
bacs_vmttotIntegerRecommendedVerbal Memory Total Scorebacs_vm_total, vmrawscore
bacs_fltotIntegerRecommendedTotal Fluency Scorebacs_fluency_total
days_baselineIntegerRecommendedDays since baseline
monthsblFloatRecommendedActual number of months from Baseline
bacvm1IntegerRecommendedTrial 1 Verbal Memory0::15bacsvm1
bacvm2IntegerRecommendedTrial 2 Verbal Memory0::15bacsvm2
bacvm3IntegerRecommendedTrial 3 Verbal Memory0::15bacsvm3
bacvm4IntegerRecommendedTrial 4 Verbal Memory0::15bacsvm4
bacvm5IntegerRecommendedTrial 5 Verbal Memory0::15bacsvm5
bactmtsIntegerRecommendedTotal Score Token Motor0::100bacstm
bacfluaIntegerRecommendedAnimal Naming Fluencybacsan
bacflufIntegerRecommendedAnimal Naming Letter Fbacslf
bacflusIntegerRecommendedAnimal Naming Letter Sbacsls
edutotFloatRecommendedTotal years of education
treatment_nameString200Recommendedtreatment name
bacs_vm_agtIntegerRecommendedBACS Verbal Memory (corrected T-score)bacs_tm_tscore, bacs_vm_tscore, vmtscore
bacs_sc_tscoreIntegerRecommendedBrief Assessment of Cognition in Schizophrenia: Symbol-Coding subtest* (# correct; T-score)sctscore
ds_normedIntegerRecommendedDigit Sequencing: t scorebacs_ds_tscore, dstscore
tm_normedIntegerRecommendedToken Motor: t score
tf_normedIntegerRecommendedTotal Fluency: t scorebacs_fluency_tscore
tl_normedIntegerRecommendedTower of London: t scorebacs_tl_tscore, tltscore
bacs_normedIntegerRecommendedComposite BAC Score (t score)bacs_composite
aescodeIntegerRecommendedStaff code number of person completing this formrater
dodeString10RecommendedDate of Data Entrydate_of_entry
bsit0FloatRecommendedWeeks from Time 0/baseline to assessment
form_completedIntegerRecommendedWas the form completed?1::41=Yes; 2=No; 3=Unverified; 4 = N/A-Not in age rangecompleted
other_reason_ncString100RecommendedOther reason form was not completedif_not_please_specify
t1wkIntegerRecommendedWeeks since Treatment Session 1week
resspecString50RecommendedSpecify other relationship
npreadIntegerRecommendedCan participant read written material?0;11 = Yes; 0 = Noreadmaterial
bacs_sc_wrongIntegerRecommendedTotal number of errors (symbol coding)1::110;8;-98 = Not applicable; -9 = Missing
bacs_tl_wrongIntegerRecommendedTotal number of errors (Tower of London)1::20;8;-98 = Not applicable; -9 = Missing
bacs_tl_totalerIntegerRecommendedTotal number of correct trials - total number of errors (Tower of London)1::20;8;-98 = Not applicable; -9 = Missing
responsesString100RecommendedRecord participant's responses for animal fluency
total_intrusionsIntegerRecommendedNumber of intrusions for numbered interval0::100
total_perseverationsIntegerRecommendedNumber of perseverations for numbered interval
linenoIntegerRecommendedLine number (lines per participant)0::150
total_wordsIntegerRecommendedTotal words produced
bacspcFloatRecommendedBAC Percentile
Data Structure

This page displays the data structure defined for the measure identified in the title and structure short name. The table below displays a list of data elements in this structure (also called variables) and the following information:

  • Element Name: This is the standard element name
  • Data Type: Which type of data this element is, e.g. String, Float, File location.
  • Size: If applicable, the character limit of this element
  • Required: This column displays whether the element is Required for valid submissions, Recommended for valid submissions, Conditional on other elements, or Optional
  • Description: A basic description
  • Value Range: Which values can appear validly in this element (case sensitive for strings)
  • Notes: Expanded description or notes on coding of values
  • Aliases: A list of currently supported Aliases (alternate element names)
  • For valid elements with shared data, on the far left is a Filter button you can use to view a summary of shared data for that element and apply a query filter to your Cart based on selected value ranges

At the top of this page you can also:

  • Use the search bar to filter the elements displayed. This will not filter on the Size of Required columns
  • Download a copy of this definition in CSV format
  • Download a blank CSV submission template prepopulated with the correct structure header rows ready to fill with subject records and upload

Please email the The NDA Help Desk with any questions.

Distribution for DataStructure: bac01 and Element:
Chart Help

Filters enable researchers to view the data shared in NDA before applying for access or for selecting specific data for download or NDA Study assignment. For those with access to NDA shared data, you may select specific values to be included by selecting an individual bar chart item or by selecting a range of values (e.g. interview_age) using the "Add Range" button. Note that not all elements have appropriately distinct values like comments and subjectkey and are not available for filtering. Additionally, item level detail is not always provided by the research community as indicated by the number of null values given.

Filters for multiple data elements within a structure are supported. Selections across multiple data structures will be supported in a future version of NDA.