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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



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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.

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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.

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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/projectstepid
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired field
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.
sexString20RequiredSex of the subjectM;FM = Male; F = Femalegender
daysrzIntegerRecommendeddays since randomization
pathwayIntegerRecommendedstep pathway1::91=SCP; 2=AD-Acute Depression; 3=REFD-Refractory Dep; 4=RELP-Relapse Prevent; 5=Psy-AD-Psychosocial; 6=Psy-REL-Psychosocial; 7=Omega 3; 8=LiMRS; 9=PAD-Psychosocial
visitString50RecommendedVisit name
certcodeIntegerRecommendedstepbd certification code
selfhelpIntegerRecommendedself help group0;1;-70=No; 1=Yes; -7=Refused
shnumberIntegerRecommendednumber of times in self help g
travservIntegerRecommendedtravel to self help
sitewaitIntegerRecommendedwait for treatment
hotlineIntegerRecommendedReceived treatment during past 3 months Hotline0;10=Not checked; 1=Checked
hotnumIntegerRecommendednumber of times use hotline
dboardIntegerRecommendeddid you access discussion boar0;1;-70=No; 1=Yes; -7=Refused
dboardnuIntegerRecommendedhow many times use discuss boa
seeprofIntegerRecommendedsee professionals0;1;-70=No; 1=Yes; -7=Refused
ministerIntegerRecommendedminister yes no0;1;-70=No; 1=Yes; -7=Refused
minvisitIntegerRecommendedminister number of visits
mintravlIntegerRecommendedminister travel minutes
minwaitIntegerRecommendedminister wait on site
genpractIntegerRecommendedgeneral practitioner0;1;-70=No; 1=Yes; -7=Refused
gpvisitIntegerRecommendedgen pract number of visits
gptravlIntegerRecommendedgen pract travel time
gpwaitIntegerRecommendedgen pract wait on site
psychiatIntegerRecommendedpsychiatrist0;1;-70=No; 1=Yes; -7=Refused
pmdvisitIntegerRecommendedpsychiatrist number of visits
pmdtravlIntegerRecommendedpsychiatrist travel time
pmdwaitIntegerRecommendedpsychiatrist wait on site
cardiolIntegerRecommendedcardiologist0;1;-70=No; 1=Yes; -7=Refused
carvisitIntegerRecommendedcardiologist number of visits
cartravlIntegerRecommendedcardiologist travel time
carwaitIntegerRecommendedcardiologist wait on site
psycholIntegerRecommendedpsychologist0;1;-70=No; 1=Yes; -7=Refused
psyvisitIntegerRecommendedpsychologist number of visits
psytravlIntegerRecommendedpsychologist travel time
psywaitIntegerRecommendedpsychologist wait on site
socworkIntegerRecommendedsocial worker0;1;-70=No; 1=Yes; -7=Refused
socvisitIntegerRecommendedsocial worker number of visits
soctravlIntegerRecommendedsocial worker travel time
socwaitIntegerRecommendedsocial worker wait on site
counselIntegerRecommendedCounselor0;10=Not checked; 1=Checked
cnsvisitIntegerRecommendedcounselor number of visits
cnstravlIntegerRecommendedcounselor travel time
cnswaitIntegerRecommendedcounselor wait on site
nurseIntegerRecommendedNurse/nurse practitioner0;10=Not checked; 1=Checked
rnvisitIntegerRecommendednurse number of visits
rntravlIntegerRecommendednurse travel time
rnwaitIntegerRecommendednurse wait on site
spirituaIntegerRecommendedspiritualist0;1;-70=No; 1=Yes; -7=Refused
sprvisitIntegerRecommendedspiritualist number of visits
sprtravlIntegerRecommendedspiritualist travel time
sprwaitIntegerRecommendedspiritualist wait on site
othprofIntegerRecommendedother professional0;1;-70=No; 1=Yes; -7=Refused
opvisitIntegerRecommendedother profess number of visits
optravlIntegerRecommendedother professional travel time
opwaitIntegerRecommendedother profess wait on site
hospemerIntegerRecommendedhospital emergency0;1;-70=No; 1=Yes; -7=Refused
hosvisitIntegerRecommendedhospital er number of visits
hostravlIntegerRecommendedhospital er travel time
hoswaitIntegerRecommendedhospital er wait on site
psychoutIntegerRecommendedpsychiatric outpatient clinic0;1;-70=No; 1=Yes; -7=Refused
outvisitIntegerRecommendedoutpatient number of visits
outtravlIntegerRecommendedoutpatient travel time
outwaitIntegerRecommendedoutpatient wait on site
drugalcIntegerRecommendeddrug alcohol outpatient clinic0;1;-70=No; 1=Yes; -7=Refused
drgvisitIntegerRecommendeddrug clinic number of visits
drgtravlIntegerRecommendeddrug clinic travel time
drgwaitIntegerRecommendeddrug clinic wait on site
mdprivIntegerRecommendeddoctor private office0;1;-70=No; 1=Yes; -7=Refused
mdvisitIntegerRecommendedmd office number of visits
mdtravlIntegerRecommendedmd office travel time
mdwaitIntegerRecommendedmd office wait on site
socservIntegerRecommendedsocial service office0;1;-70=No; 1=Yes; -7=Refused
ssvisitIntegerRecommendedsocial service number of visit
sstravlIntegerRecommendedsocial service travel time
sswaitIntegerRecommendedsocial service wait on site
progjailIntegerRecommendedprogram in jail prison0;1;-70=No; 1=Yes; -7=Refused
jaivisitIntegerRecommendedjail program number of visits
jaitravlIntegerRecommendedjail program travel time
jaiwaitIntegerRecommendedjail program wait on site
dropinIntegerRecommendeddrop in center0;1;-70=No; 1=Yes; -7=Refused
drpvisitIntegerRecommendeddrop-in center number of visits
drptravlIntegerRecommendeddrop-in center travel time
drpwaitIntegerRecommendeddrop-in center wait on site
resiprogIntegerRecommendedresidential program0;1;-70=No; 1=Yes; -7=Refused
rpvisitIntegerRecommendedresidential number of visits
rptravlIntegerRecommendedresidential travel time
rpwaitIntegerRecommendedresidential wait on site
oplaceIntegerRecommendedother place yes no0;1;-70=No; 1=Yes; -7=Refused
plvisitIntegerRecommendedother place number of visits
pltravlIntegerRecommendedother place travel time
plwaitIntegerRecommendedother place wait on site
plnoneIntegerRecommendednone yes no0;1;-70=No; 1=Yes; -7=Refused
othprobIntegerRecommendedother problem emotions nerves0;1;-70=No; 1=Yes; -7=Refused
opminIntegerRecommendedminister priest rabbi0;1;-70=No; 1=Yes; -7=Refused
opminvisIntegerRecommended# times emotions 1
opmintrvIntegerRecommendedtravel time 1
opminwtIntegerRecommendedtreatment time 1
opgpIntegerRecommendedgeneral practitioner family0;1;-70=No; 1=Yes; -7=Refused
opgpvisIntegerRecommended# times emotions 2
opgptrvIntegerRecommendedtravel time 2
opgpwtIntegerRecommendedtreatment time 2
oppmdIntegerRecommendedwhich ones psychiatrist0;1;-70=No; 1=Yes; -7=Refused
oppmdvisIntegerRecommended# times emotions 3
oppmdtrvIntegerRecommendedtravel time 3
oppmdwtIntegerRecommendedtreatment time 3
opcarIntegerRecommendedcardiologist other physician0;1;-70=No; 1=Yes; -7=Refused
opcarvisIntegerRecommended# times emotions 4
opcartrvIntegerRecommendedtravel time 4
opcarwtIntegerRecommendedtreatment time 4
oppsyIntegerRecommendedwhich ones psychologist0;1;-70=No; 1=Yes; -7=Refused
oppsyvisIntegerRecommended# times emotions 5
oppsytrvIntegerRecommendedtravel time 5
oppsywtIntegerRecommendedtreatment time 5
opsocIntegerRecommendedsocial worker0;1;-70=No; 1=Yes; -7=Refused
opsocvisIntegerRecommended# times emotions 6
opsoctrvIntegerRecommendedtravel time 6
opsocwtIntegerRecommendedtreatment time 6
opcnsIntegerRecommendedwhich ones counselor0;1;-70=No; 1=Yes; -7=Refused
opcnsvisIntegerRecommended# times emotions 7
opcnstrvIntegerRecommendedtravel time 7
opcnswtIntegerRecommendedtreatment time 7
oprnIntegerRecommendednurse occupational therapist0;1;-70=No; 1=Yes; -7=Refused
oprnvisIntegerRecommended# times emotions 8
oprntrvIntegerRecommendedtravel time 8
oprnwtIntegerRecommendedtreatment time 8
opsprIntegerRecommendedspiritualist herbalist healer0;1;-70=No; 1=Yes; -7=Refused
opsprvisIntegerRecommended# times emotions 9
opsprtrvIntegerRecommendedtravel time 9
opsprwtIntegerRecommendedtreatment time 9
opopIntegerRecommendedother professional0;1;-70=No; 1=Yes; -7=Refused
opopvisIntegerRecommended# times emotions 10
opoptrvIntegerRecommendedtravel time 10
opopwtIntegerRecommendedtreatment time 10
ophosIntegerRecommendedhospital emergency department0;1;-70=No; 1=Yes; -7=Refused
ophosvisIntegerRecommended# times emotions 11
ophostrvIntegerRecommendedtravel time 11
ophoswtIntegerRecommendedtreatment time 11
opoutIntegerRecommendedpsychiatric outpatient clinic0;1;-70=No; 1=Yes; -7=Refused
opoutvisIntegerRecommended# times emotions 12
opouttrvIntegerRecommendedtravel time 12
opoutwtIntegerRecommendedtreatment time 12
opdrgIntegerRecommendeddrug alcohol clinic0;1;-70=No; 1=Yes; -7=Refused
opdrgvisIntegerRecommended# times emotions 13
opdrgtrvIntegerRecommendedtravel time 13
opdrgwtIntegerRecommendedtreatment time 13
opmdIntegerRecommendeddoctors private office0;1;-70=No; 1=Yes; -7=Refused
opmdvisIntegerRecommended# times emotions 14
opmdtrvIntegerRecommendedtravel time 14
opmdwtIntegerRecommendedtreatment time 14
opssIntegerRecommendedsocial service agency0;1;-70=No; 1=Yes; -7=Refused
opssvisIntegerRecommended# times emotions 15
opsstrvIntegerRecommendedtravel time 15
opsswtIntegerRecommendedtreatment time 15
opjaiIntegerRecommendedprogram in jail0;1;-70=No; 1=Yes; -7=Refused
opjaivisIntegerRecommended# times emotions 16
opjaitrvIntegerRecommendedtravel time 16
opjaiwtIntegerRecommendedtreatment time 16
opdrpIntegerRecommendeddrop in center program0;1;-70=No; 1=Yes; -7=Refused
opdrpvisIntegerRecommended# times emotions 17
opdrptrvIntegerRecommendedtravel time 17
opdrpwtIntegerRecommendedtreatment time 17
oprpIntegerRecommendedresidential program home0;1;-70=No; 1=Yes; -7=Refused
oprpvisIntegerRecommended# times emotions 18
oprptrvIntegerRecommendedtravel time 18
oprpwtIntegerRecommendedtreatment time 18
opplIntegerRecommendedother place0;1;-70=No; 1=Yes; -7=Refused
opplvisIntegerRecommended# times emotions 19
oppltrvIntegerRecommendedtravel time 19
opplwtIntegerRecommendedtreatment time 19
opplnoneIntegerRecommendedother place specify none0;1;-70=No; 1=Yes; -7=Refused
misvisitIntegerRecommendedhave there been missing visits0;1;-70=No; 1=Yes; -7=Refused
appointIntegerRecommendedappointments for psychi therap0;1;-70=No; 1=Yes; -7=Refused
apptnumIntegerRecommendedhow many appointments
takemedIntegerRecommendedhow offten take medication0::10;-50=0%; 1=1-10%; 2=11-20%; 3=21-30%; 4=31-40%; 5=41-50%; 6=51-60%; 7=61-70%; 8=71-80%; 9=81-90%; 10=91-100%; -5=No prescribed medications
coltplanIntegerRecommendedcollaborative treatment plan0;1;-70=No; 1=Yes; -7=Refused
coltupdtIntegerRecommendedupdated collab treat plan0;1;-70=No; 1=Yes; -7=Refused
moodccomIntegerRecommendedcompleted mood chart0::40=0; 1=1-3; 2=4-6; 3=7-9; 4=10-12
moodcrevIntegerRecommendedmood chart review0;1;-70=No; 1=Yes; -7=Refused
pregnantIntegerRecommendedPatient is currently pregnant0::2;-7; 9990=No; 1=Yes;2=DK;-7= Refused; 999=Legimately skipped
duerzIntegerRecommendeddue days since randomization
preglstvIntegerRecommendedbeen pregnant since last visit0;1;-7; -80=No; 1=Yes; -7=Refused; -8=NA
tryconcvIntegerRecommendedtrying to conceive now0;1;-70=No; 1=Yes; -7=Refused
tryconlvIntegerRecommendedtry conceive since last visit0;1;-70=No; 1=Yes; -7=Refused
sui3mosIntegerRecommendedsuicide attempt last 3 mos0;1;-70=No; 1=Yes; -7=Refused
suiattIntegerRecommendedsuicide number of attempts
suihospIntegerRecommendedsuicide hospital admission0;1;-70=No; 1=Yes; -7=Refused
suierIntegerRecommendedsuicide should have gone to er0;1;-70=No; 1=Yes; -7=Refused
monthdepFloatRecommendedmonths depressed
daymanicFloatRecommendeddays manic in quarter
switchesIntegerRecommendednumber of switches
weight_stdFloatRecommendedWeight - Standard Unit-1 = Not knownweight
codeppsString20Recommendedprimary psychiatrist code
codespsString20Recommendedsecondary psychiatrist code
codepptString20Recommendedprimary psychotherapist code
codesptString20Recommendedsecondary psychotherapist code
siteString101RecommendedSiteStudy Sitesite_id
visdayIntegerRecommendedNumber of days from study baseline to date of visit
weekFloatRecommendedWeek in level/study99=week 10-week 14
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: caut01 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.