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NDAR provides a single access to de-identified autism research data. For permission to download data, you will need an NDAR account with approved access to NDAR or a connected repository (AGRE, IAN, or the ATP). For NDAR 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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Selected Filters
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The filters you have selected from various query interfaces will be stored here, in the 'Filter Cart'. The database will be queried using filters added to your 'Filter Cart', when multiple filters are defined, each will be executed using 'AND' logic, so with each filter that is applied the result set gets smaller.

From the 'Filter Cart' you can inspect each of the filters that have been defined, and you also have the option to remove filters. The 'Filter Cart' itself will display the number of filters applied along with the number of subjects that are identified by the combination of those filters. For example a GUID filter with two subjects, followed by a GUID filter for just one of those subjects would return only data for the subject that is in both GUID filters.

If you have a question about the filter cart, or underlying filters please contact the help desk at The NDA Help Desk

Value Range
Data Structures with shared data
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Medication Accountability Form



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/projectrandid
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging 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.
genderString20RequiredSex of the subjectM;FM = Male; F = Female
siteString100RecommendedSiteStudy Sitesiteid
visitString50RecommendedVisit nameCharacter description of each type of visitint1
completedIntegerRecommendedChecks if form is completed0::20=No; 1=Yes; 2=Yes, lostformcomp
subtrial_nameIntegerRecommendedName of subtrial1::31=Crossover; 2=Guanfacine; 3= Open Label MPH
prescript_letterString1RecommendedPrescription letterA;B;C;D;E
pmstdtIntegerRecommendedDate medication/treatment began in days from the randomization dateprescript_stdt
pmstopIntegerRecommendedDate medication/treatment stopped in days from the randomization dateprescript_enddt
med_q1aaIntegerRecommendedPrescription A from bottle A0::200
med_q1abIntegerRecommendedPrescription A from bottle B0::200
med_q1acIntegerRecommendedPrescription A from bottle C0::200
med_q1adIntegerRecommendedPrescription A from bottle D0::200
med_q1baIntegerRecommendedPrescription B from bottle A0::200
med_q1bbIntegerRecommendedPrescription B from bottle B0::200
med_q1bcIntegerRecommendedPrescription B from bottle C0::200
med_q1bdIntegerRecommendedPrescription B from bottle D0::200
med_q1caIntegerRecommendedPrescription C from bottle A0::200
med_q1cbIntegerRecommendedPrescription C from bottle B0::200
med_q1ccIntegerRecommendedPrescription C from bottle C0::200
med_q1cdIntegerRecommendedPrescription C from bottle D0::200
med_q1daIntegerRecommendedPrescription D from bottle A0::200
med_q1dbIntegerRecommendedPrescription D from bottle B0::200
med_q1dcIntegerRecommendedPrescription D from bottle C0::200
med_q1ddIntegerRecommendedPrescription D from bottle D0::200
med_q1eaIntegerRecommendedPrescription E from bottle A0::200
med_q1ebIntegerRecommendedPrescription E from bottle B0::200
med_q1ecIntegerRecommendedPrescription E from bottle C0::200
med_q1edIntegerRecommendedPrescription E from bottle D0::200
prescript_amFloatRecommendedPrescription AM
prescript_noonFloatRecommendedPrescription Noon
prescript_pmFloatRecommendedPrescription PM
prescript_seesubIntegerRecommendedDid you see the subject?1;21=Yes 2=No
prescript_botletString1RecommendedBottle letterA;B;C;D
prescript_botdispFloatRecommendedPills dispensed from bottle
prescript_botexpFloatRecommendedExpected returned from bottle
prescript_botretFloatRecommendedActual returned from bottle
prescript_botmissFloatRecommendedMissed from bottle
prescript_botextrFloatRecommendedExtra from bottle
prescript_botlostFloatRecommendedLost from bottle
prescript_reteqexpIntegerRecommendedDid returned equal expected?1;21=Yes 2=No
prescript_tookmedIntegerRecommendedTook all meds as prescribed?1;21=Yes 2=No
med_q4aIntegerRecommendedWeek D1 Bottle am pills0::200
med_q4bIntegerRecommendedWeek D1 Bottle noon pills0::200
med_q4cIntegerRecommendedWeek D1 Bottle pm pills0::200
med_q4dIntegerRecommendedWeek D1 Bottle pills0::200
daysrzIntegerRecommendeddays since randomizationvisitdt
weekFloatRecommendedWeek in level/study99=week 10-week 14
rand_numIntegerRecommendedRandomization Number0::2
ma_blupropFloatRecommendedblue pills proportion taken0::100
ma_grepropFloatRecommendedgreen pills proportion taken0::100
ma_orapropFloatRecommendedorange pills proportion taken0::100
bludoseFloatRecommendedDosage per blue pill (MG)
gredoseFloatRecommendedDosage per green pill (MG)
apcurdoseFloatRecommendedantipsychotic current capsules/dayCurrent antipsychotic dose in MG
stpnm1String250RecommendedStudy med name1drug_name
mr_apschedIntegerRecommendedantipsychotic dosing schedule1::61=qD=once a day; 2=BID=twice a day; 3=TID=three times a day; 4=QID=four times a day; 5=PRN=as needed; 6=Oth=Other
mr_apschedsString20Recommendedantipsychotic dosing schedule, describe
mr_apdoseeqIntegerRecommendedantipsychotic are doses equal1::31=yes; 2=more in morning; 3=more after noon
mr_apchangeIntegerRecommendedantipsychotic change in prescribed dose0::21=yes; 0=no; 2=Re-randomized
mr_apnewdoseIntegerRecommendedmed record 4, antipsychotic new number of capsules/day0::8
mr_hospinfoIntegerRecommendedsubject hospitalized from info gathered this visit0;10=No; 1=Yes
mr_becurdoseFloatRecommendedbenztrpine current total dose
mr_beschedIntegerRecommendedbenztrpine dosing schedule1::61=qD=once a day; 2=BID=twice a day; 3=TID=three times a day; 4=QID=four times a day; 5=PRN=as needed; 6=Oth=Other
mr_beschedprnIntegerRecommendedbenztrpine dosing schedule PRN dosage
mr_bechangeIntegerRecommendedbenztrpine change in prescribed dose0;10=No; 1=Yes
mr_benewdoseFloatRecommendedbenztrpine new dose
mr_trcurdoseIntegerRecommendedtrihexphenydyl current total dose
mr_trschedIntegerRecommendedtrihexphenydyl dosing schedule1::61=qD=once a day; 2=BID=twice a day; 3=TID=three times a day; 4=QID=four times a day; 5=PRN=as needed; 6=Oth=Other
mr_trschedprnIntegerRecommendedtrihexphenydyl dosing schedule PRN dosage
mr_trchangeIntegerRecommendedtrihexphenydyl change in prescribed dose0;10=No; 1=Yes
mr_trnewdoseIntegerRecommendedtrihexphenydyl new dose
mr_prcurdoseIntegerRecommendedpropranolol current total dose
mr_prschedIntegerRecommendedpropranolol dosing schedule1::61=qD=once a day; 2=BID=twice a day; 3=TID=three times a day; 4=QID=four times a day; 5=PRN=as needed; 6=Oth=Other
mr_prschedprnIntegerRecommendedpropranolol dosing schedule PRN dosage
mr_prchangeIntegerRecommendedpropranolol change in prescribed dose0;10=No; 1=Yes
mr_prnewdoseIntegerRecommendedpropranolol new dose
mr_locurdoseFloatRecommendedlorazepam current total dose
mr_loschedIntegerRecommendedlorazepam dosing schedule1::61=qD=once a day; 2=BID=twice a day; 3=TID=three times a day; 4=QID=four times a day; 5=PRN=as needed; 6=Oth=Other
mr_loschedsString20Recommendedlorazepam dosing schedule, describe
mr_loschedprnIntegerRecommendedlorazepam dosing schedule PRN dosage
mr_lochangeIntegerRecommendedlorazepam change in prescribed dose0;10=No; 1=Yes
mr_lonewdoseIntegerRecommendedlorazepam new dose
mr_clcurdoseFloatRecommendedclonazepam current total dose
mr_clschedIntegerRecommendedclonazepam dosing schedule1::61=qD=once a day; 2=BID=twice a day; 3=TID=three times a day; 4=QID=four times a day; 5=PRN=as needed; 6=Oth=Other
mr_clschedsString20Recommendedclonazepam dosing schedule, describe
mr_clschedprnFloatRecommendedclonazepam dosing schedule PRN dosage
mr_clchangeIntegerRecommendedclonazepam change in prescribed dose0;10=No; 1=Yes
mr_clnewdoseFloatRecommendedclonazepam new dose0::3
mr_antideprIntegerRecommendedany concomitant meds antidepressants0;10=No; 1=Yes
mr_moodstabIntegerRecommendedany concomitant meds mood stabilizers0;10=No; 1=Yes
mr_securdoseFloatRecommendedsertraline current total dose
mr_flcurdoseIntegerRecommendedfluoxetine current total dose
mr_vacurdoseIntegerRecommendedvalproic acid current total dose
mr_varecdoseFloatRecommendedvalproic acid most recent level on dose
mr_licurdoseIntegerRecommendedlithium current total dose
mr_lirecdoseFloatRecommendedlithium most recent level on this dose
mr_mdstab1String20Recommendedmood stabilizer use 1
mr_mdstab2String20Recommendedmood stabilizer use 2
ssq2edString75RecommendedName of antibiotics(or condition treated)mr_antibiotic
mr_anticholinString20Recommendedanticholin use
mr_propranololString20Recommendedprpranolol use
benzo_nameString50RecommendedBenzodiazepines name?mr_benzo
mr_diphenString20RecommendedDiphenhydramine use
mr_antipsych1String20Recommendedantipsychotic use 1
mr_antipsych2String20Recommendedantipsychotic use 2
mr_oth1String20Recommendedother drug use 1otdrug
mr_oth2String20Recommendedother drug use 2
mr_oth3String20Recommendedother drug use 3
mr_oth4String20Recommendedother drug use 4
treatString1RecommendedTreatment for RandomizationX;Y;Ztreatment
stdate1String20RecommendedMedication start date 1mm/dd/yyyy or write out month year
spdate1String20RecommendedMedication stop date 1mm/dd/yyyy or write out month year
stds1FloatRecommendedPrescribed med daily dose 1
ma1a_abIntegerRecommendedDose 1: Active or Blinded1;21=Active; 2=Blinded
stdate2String20RecommendedMedication start date 2mm/dd/yyyy or write out month year
spdate2String20RecommendedMedication stop date 2mm/dd/yyyy or write out month year
stds2FloatRecommendedPrescribed med daily dose 2
ma1b_abIntegerRecommendedDose 2: Active or Blinded1;21=Active; 2=Blinded
stdate3String20RecommendedMedication start date 3mm/dd/yyyy or write out month year
spdate3String20RecommendedMedication stop date 3mm/dd/yyyy or write out month year
stds3FloatRecommendedPrescribed med daily dose 3
ma1c_abIntegerRecommendedDose 3: Active or Blinded1;21=Active; 2=Blinded
stdate4String20RecommendedMedication start date 4mm/dd/yyyy or write out month year
spdate4String20RecommendedMedication stop date 4mm/dd/yyyy or write out month year
stds4FloatRecommendedPrescribed med daily dose 4
ma1d_abIntegerRecommendedDose 4: Active or Blinded1;21=Active; 2=Blinded
stdate5String20RecommendedMedication start date 5mm/dd/yyyy or write out month year
spdate5String20RecommendedMedication stop date 5mm/dd/yyyy or write out month year
stds5String50RecommendedPrescribed med daily dose 5
ma1e_abIntegerRecommendedDose 5: Active or Blinded1;21=Active; 2=Blinded
stdate6String20RecommendedMedication start date 6mm/dd/yyyy or write out month year
spdate6String20RecommendedMedication stop date 6mm/dd/yyyy or write out month year
stds6String50RecommendedPrescribed med daily dose 6
ma1f_abIntegerRecommendedDose 6: Active or Blinded1;21=Active; 2=Blinded
stdate7String20RecommendedMedication start date 7mm/dd/yyyy or write out month year
spdate7String20RecommendedMedication stop date 7mm/dd/yyyy or write out month year
ma1g_abIntegerRecommendedDose 7: Active or Blinded1;21=Active; 2=Blinded
ma3_reasonString250RecommendedReason Medication Was Not Taken As Prescribed or How Dose Was Lost
version_formString100RecommendedForm used
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: mac01 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.