NDA Help Center

Frequently Asked Questions


NDA Help Center

Filter Cart

The Filter Cart provides a way to query and access data for which you may be interested.  There are multiple places to go query and Add to Filter Cart (Sometimes called Download).  

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 add subjects, sometimes it may take a few minutes to populate.  You can continue to do other things 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 available for the subjects selected 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 available.  However, if you want to see all of the clinical and phenotype, then select, "Find All Subject Data" to see all the data avaialble for those subjects.  

when a secord or third filter is applied, an AND condition is used to determine the subjects that are exist in all filters.  If the subject does not appear in any filter, that subjects data will be excluded from your filter cart. Given the sparcity of data in the NDA, it is possible for no subjects to appear across filters.  If that happens, clear your filter cart, and start over.  

The NDA is looking to enhance query/filtering.  Until additional tools become available, it is best to package more data than you need and then package and download the data and use other tools to further restrict and analyze the data.  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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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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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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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

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PQ Demographics



PQ Demographics

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/projectsubjid
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired fieldINTERVIEW_DATE_PQD, fdi_q2
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.INTERVIEW_AGE_PQD
genderString20RequiredSex of the subjectM;FM = Male; F = FemaleGENDERPQ, fdi_q4
relationshipIntegerRecommendedRelationship of respondent to individual
1::88; 90;-999
1 = Biological mom; 2 = Biological dad; 3 = Grandparent; 4 = Special education (sped) teacher; 5 = General education teacher; 6 = Occupational therapist; 7 = Speech and language therapist; 8 = Behavioral therapist; 9 = Paraprofessional; 10 = Aide; 11 = Principal; 12 = Administrator; 13 = Other; 14 = Content teacher; 15 = Parent center director; 16 = Self; 17=Adoptive mother; 18=Adoptive father; 19=Foster mother; 20 = Foster father; 21=Grandmother; 22=Grandfather; 23=Step-mother; 24 = Step-father; 25=Aunt; 26=Uncle; 27=Missing Data; 28=Both parents;31= Grandmother from mother side; 32= Grandfather from mother side; 33= Grandmother from father side; 34= Grandfather from father side; 36= Brother; 37= Sister; 38= Cousin; 39= female caregiver; 40=male caregiver; 41=Female child; 42=Male child; 43=Spouse/Mate; 44=Friend; 45=Parent; 46=Significant other; 47=Sibling; 48=Son/Daughter; 49=Son-in-law/Daughter-in law; 50=Other Relative; 51=Paid caregiver; 52=Friends; 53=Roommate; 54=Supervisor; 55=mother's boyfriend; 56=other parental figure; 57=Summary; 58=counselor ; 59 = other female relative; 60 = other male relative; 61 = non-relative ; 62=Maternal Aunt; 63=Maternal Uncle; 64=Maternal Cousin; 65 = Paternal Aunt; 66=Paternal Uncle; 67=Paternal Cousin ; 68=Biological/Adoptive Mother and Grandmother; 69=Biological/Adoptive Mother and Stepmother and Grandmother; 70=Biological/Adoptive Mother and Grandmother and Foster Father; 71=Biological/Adoptive Mother and Stepmother and Foster Mother; 72=Biological/Adoptive Mother and Foster Mother; 73=Biological/Adoptive Mother and Biological/Adoptive Father; 74=Biological/Adoptive Mother and Stepmother and Biological/Adoptive Father; 75=Biological/Adoptive Mother and Other; 76=Biological/Adoptive Mother and Stepmother and Stepfather; 77=Biological/Adoptive Mother and Stepfather; 78=Biological/Adoptive Mother and Grandfather; 79=Biological/Adoptive Mother and Stepmother and Foster Father; 80=Biological/Adoptive Mother and Stepmother; 81=Guardian, female; 82=Other female; 83=Guardian, male; 84=Other male; 85=Other/Grandparent/Nanny; 86 = Mother, Father, Guardian; 87 = Daughter, son, grandchild; 88 = Professional (e.g., social worker, nurse, therapist, psychiatrist, or group home staff); 90=Other; -999=MissingPRELATION
respondent_other_specifyString50RecommendedRespondent: Other (specify)PREL_SP, fdi_q11a
ethnicityString30RecommendedEthnicity of participant
Hispanic or Latino; Not Hispanic or Latino; Unknown
CHETHN, fdi_q6
raceString30RecommendedRace of study subjectAmerican Indian/Alaska Native; Asian; Hawaiian or Pacific Islander; Black or African American; White; More than one race; Unknown or not reportedCHRACE, fdi_q5
ch_raceString55RecommendedChild's/study subject Race specifyCHRACE_OTH, fdi_q5_other
sclgenderString15Recommendedrespondent's genderM;FM = Male; F = FemalePGENDERPQ
resp_ethnicityString30RecommendedRespondent's ethnicityHispanic or Latino;Not Hispanic or Latino;Unknown or not reportedPETHN, fdi_q14
resp_raceString150RecommendedRespondent's raceAmerican Indian/Alaska Native; Asian; Hawaiian or Pacific Islander; Black or African American; White; More than one race; Unknown or not reportedPRACE, fdi_q13
race_otherString100RecommendedRace of Respondent SpecifyPRACE_OTH, fdi_q13_other
resp_educationIntegerRecommendedRespondent's education1::91 = Less than 8th grade; 2 = 9th-11th grade; 3 = High school or GED; 4 = Trade or vocational; 5 = Associate's degree or 2 years; 6 = Courses towards college; 7 = Bachelor's degree; 8 = Master's degree; 9 = Professional degree (MD, PhD, JD)PED, fdi_q15
resp_occupationString255RecommendedRespondent's occupationOCCUP, fdi_q18, subjectwork
occup_fulljobIntegerRecommendedOccupation(choice=1: Working at a full-time paid job (35 or more hours a week))0;10=Unchecked; 1=Checkedfdi_q17___1
occup_partjobIntegerRecommendedOccupation(choice=2: Working at a part-time paid job (less than 35 hours a week))0;10=Unchecked; 1=Checkedfdi_q17___2
occup_fullstudIntegerRecommendedOccupation(choice=3: Full-time student (3 or more classes a semester))0;10=Unchecked; 1=Checkedfdi_q17___3
occup_partstudIntegerRecommendedOccupation(choice=4: Part-time student (1 or 2 classes a semester))0;10=Unchecked; 1=Checkedfdi_q17___4
occup_nojobIntegerRecommendedOccupation(choice=5: Not currently working)0;10=Unchecked; 1=Checkedfdi_q17___5
occup_occothIntegerRecommendedOccupation(choice=6: Other)0;10=Unchecked; 1=Checkedfdi_q17___6
occup_spString100RecommendedOccupation other. Please describe:fdi_q17a
num_in_house_adultsIntegerRecommendedNumber of Individuals in Household AdultsADINHOME
num_in_house_kidsIntegerRecommendedNumber of Individuals in Household ChildrenCHINHOME
demo_resp_statusIntegerRecommendedrespondent's marital status1 :: 111 = Married; 2 = Remarried; 3 = Live with partner (not married); 4 = Separated; 5 = Divorced; 6 = Single (never married); 7 = Widowed; 8=Married or Living Together;9 = Missing/Not Applicable; 10 = Other; 11=Refused to answerfdi_q16, marital
livewithIntegerRecommendedDoes this child currently live with you?0;10=No; 1=Yes
resarrIntegerRecommendedPlease specify residential arangement for child:1::41=Lives at home with parents; 2=Lives in residential setting including weekends; 3=Lives in residential setting excluding weekends; 4=Other
resarr_spString100RecommendedPlease specify:
spoken_engIntegerRecommendedAre you fluent in spoken English?0;10 = No; 1 = YesNATIVESPK
ccalanguageIntegerRecommendedIs English the main language spoken at home?0;1;-90 = No; 1 = Yes; -9 = Missing valueENGHOUSE, fdi_q29___1
language_specifyString255RecommendedLanguage in the home - Specify if other than standard englishOTHLANG
sibynIntegerRecommendedDoes this child have any siblings?0;10=No; 1=Yes
demo_siblingscountIntegerRecommendedNumber of siblings888 = not applicable; 999 = missingNUMSIBS, fdi_q8a
ques_sub1GUIDRecommendedGUID -Sibling 1
ques_gender1String50RecommendedGender -Sibling 1
M = Male; F = Female; T =TransgenderSIBGENDER1, fdi_q10_1c
sibling1_diagString20Recommendedsibling 1 diagnosisNone; ASD; Other/specifySIBDIAG1, fdi_q10_1d___3
ques_sub2GUIDRecommendedGUID -Sibling 2
ques_gender2String50RecommendedGender -Sibling 2
M = Male; F = FemaleSIBGENDER2, fdi_q10_2c
sibling2_diagString20Recommendedsibling 2 diagnosisNone; ASD; Other/specifySIBDIAG2, fdi_q10_2d___3
ques_sub3GUIDRecommendedGUID -Sibling 3
ques_gender3String50RecommendedGender -Sibling 3
M = Male; F = FemaleSIBGENDER3, fdi_q10_3c
sibling3_diagString20Recommendedsibling 3 diagnosisNone; ASD; Other/specifySIBDIAG3, fdi_q10_3d___3
ques_sub4GUIDRecommendedGUID -Sibling 4
ques_gender4String50RecommendedGender -Sibling 4
M = Male; F = FemaleSIBGENDER4, fdi_q10_4c
sibling4_diagString20Recommendedsibling 4 diagnosisNone; ASD; Other/specifySIBDIAG4, fdi_q10_4d___3
ques_sub5GUIDRecommendedGUID -Sibling 5
ques_gender5String50RecommendedGender -Sibling 5
M = Male; F = FemaleSIBGENDER5, fdi_q10_5c
sibling5_diagString20Recommendedsibling 5 diagnosisNone; ASD; Other/specifySIBDIAG5, fdi_q10_5d___3, fdi_q10_6d___1
ed_inclIntegerRecommended18. What is your childs current educational placement (choice=1: Inclusion Classroom)0;10=Unchecked; 1=Checked
ed_genedIntegerRecommended18. What is your childs current educational placement (choice=2: General Education Classroom)0;10=Unchecked; 1=Checked
ed_selfcontIntegerRecommended18. What is your childs current educational placement (choice=3: Self-Contained Classroom)0;10=Unchecked; 1=Checked
ed_outdistIntegerRecommended18. What is your childs current educational placement (choice=4: Out of District Placement (i.e. specialized placement, private setting))0;10=Unchecked; 1=Checked
ed_othIntegerRecommended18. What is your childs current educational placement (choice=5: Other (e.g., day program))0;10=Unchecked; 1=Checked
edothString100RecommendedPlease describe:
partliveIntegerRecommendedDo you have a spouse or partner who lives with you and your child?0;10=No; 1=Yesfdi_q21preq
partgenderIntegerRecommendedPartner or spouses gender1;21=Male; 2=Female
partner_resp_relationshipString100RecommendedRespondent's partner/spouse relationship to child1 = Biological mom; 2 = Stepmom; 3 = Adoptive mom; 4 = Grandmother; 5 = Foster mother; 6 = Biological dad; 7 = Stepdad; 8 = Adoptive dad; 9 = Grandfather; 10 = OtherPARTRELATION, fdi_q24
partrel_spString100RecommendedPlease specify: respondent's partner/spouse relationship to childfdi_q24_other
partethnIntegerRecommendedPartner or spouses ethnicity1::31=Hispanic; 2=Non-Hispanic; 3=Prefer not to respondfdi_q23
partraceIntegerRecommendedPartner or spouses race1::81=American Indian/Alaska Native; 2= Asian; 3= Native Hawaiian or Other Pacific Islander 4=Hispanic; 5=Black or African American; 6=White; 7=More than one race; 8=Unknown or not reportedPARTRACE_OTH, fdi_q22
otherraceString100Recommendedspecify other raceThe following questions are about you or the child's family.fdi_q22_other
demo_partner_eduString100RecommendedSpouse/partner highest education level
Less than 8th grade; 9th grade to 11th grade; High School Graduate/GED or equivalent; Some college credit, but less than 1 year; Technical college/vocational school; Associate degree; Bachelor degree; Master degree; Professional degree (MD, PhD, JD)
PARTED, fdi_q25
demo_partner_occupationString100RecommendedSpouse/partner OccupationPARTOCCUP, fdi_q27, spousework
part_fulljobIntegerRecommendedIs your partner(choice=1: Working at a full-time paid job (35 or more hours a week))0;10=Unchecked; 1=Checkedfdi_q26___1
part_partjobIntegerRecommendedIs your partner(choice=2: Working at a part-time paid job (less than 35 hours a week))0;10=Unchecked; 1=Checkedfdi_q26___2
part_fullstudIntegerRecommendedIs your partner(choice=3: Full-time student (3 or more classes a semester))0;10=Unchecked; 1=Checkedfdi_q26___3
part_partstudIntegerRecommendedIs your partner(choice=4: Part-time student (1 or 2 classes a semester))0;10=Unchecked; 1=Checkedfdi_q26___4
part_nojobIntegerRecommendedIs your partner(choice=5: Not currently working)0;10=Unchecked; 1=Checkedfdi_q26___5
part_occothIntegerRecommendedIs your partner(choice=6: Other)0;10=Unchecked; 1=Checkedfdi_q26___6
partoccup_spString100RecommendedPlease describe:
partner_involvemIntegerRecommendedHow involved is your partner in caring for your child0 :: 30 = Not at all involved; 1 = Somewhat involved; 2 = Very involved; 3 = Extremely involvedPARTINV, fdi_q28
income_btxIntegerRecommendedWhat is your approximate annual household income (before taxes)?1::71: Less than $20,000; 2: Between $20,000 and $49,999; 3: Between $50,000 and $99,999; 4: Between $100,000 and $149,999; 5: Between $150,000 and $200,000; 6: Over $200,000; 7: Prefer not to answerINCOME
agegroupIntegerRecommendedAge group0;10=Younger adults (<60); 1=Older adults (?60 years)
spouseindustryString100RecommendedSpouse's occupation: Industry or type of business
subjectindustryString100RecommendedSubject's occupation: Industry or type of business
educatFloatRecommendedNumber of years in formal education999=Unknown/Missingeducation
tx_codeIntegerRecommendedTreatment code0::30=Olanzapine + Sertraline Placebo; 1=Olanzapine + Sertraline; 2=Olanzapine + Sertraline + Lithium Placebo; 3=Olanzapine + Sertraline + Lithium
living_notesString50RecommendedLiving arrangements (specify)comments_live
eo4IntegerRecommendedAre you currently working at a job or business for pay0;1;90=No; 1=Yes; 9 = Missingsubjectcurrentwork
evaluation_actual_daysIntegerRecommendedEvaluation days from baseline
hi_31a5IntegerRecommendedMedication 1 days from baseline startedmedstartdays
liveIntegerRecommendedLiving arrangements1::51 = Lives alone; 2 = Lives with Others; 3 = Senior Residence; 4 = Nursing home; 5 = Other
entry_statusIntegerRecommendedEntry status1::51 = Inpatient; 2 = Outpatient; 3 = Nursing Home ; 4 = Partial Hospital ; 5 = Other
study_idIntegerRecommendedStudy ID number46=Acute Phase; 47=Stabilization Phase
weekFloatRecommendedWeek in level/study99=week 10-week 14intid
siteString100RecommendedSiteStudy Site
c_race_birString50RecommendedChild race, specified for more than one racefdi_q5b
cdiag_asdIntegerRecommendedChild current diagnosis: Autism Spectrum Disorder0;10=No; 1=Yesfdi_q7___1
cast39_otherIntegerRecommendedOther diagnosis (please specify)0; 10 = No; 1 = Yesfdi_q7___2
cdiag_noneIntegerRecommendedChild current diagnosis: none0;10=No; 1=Yesfdi_q7___3
cepispString500RecommendedCurrent diagnosis specifyfdi_q7a
fh13IntegerRecommendedBirth order0::13; 9999 = Missing valuefdi_q8
fdi_9IntegerRecommendednumber of biological siblings with an ASD diagnosis
ques_age1IntegerRecommendedAge -Sibling 1(in months)0 :: 1200fdi_q10_1b
demo_sib1_diagnosisString25RecommendedDiagnosis (if any) Sibling 1fdi_q10_1e
ques_age2IntegerRecommendedAge -Sibling 2(in months)0 :: 1200fdi_q10_2b
demo_sib2_diagnosisString25RecommendedDiagnosis (if any) Sibling 2fdi_q10_2e
ques_age3IntegerRecommendedAge -Sibling 3(in months)0 :: 1200fdi_q10_3b
demo_sib3_diagnosisString25RecommendedDiagnosis (if any) Sibling 3fdi_q10_3e
ques_age4IntegerRecommendedAge -Sibling 4(in months)0 :: 1200fdi_q10_4b
demo_sib4_diagnosisString25RecommendedDiagnosis (if any) Sibling 4fdi_q10_4e
ques_age5IntegerRecommendedAge -Sibling 5(in months)0 :: 1200fdi_q10_5b
demo_sib5_diagnosisString25RecommendedDiagnosis (if any) Sibling 5fdi_q10_5e
ques_age6IntegerRecommendedAge -Sibling 6(in months)0 :: 1200fdi_q10_6b
ques_gender6String50RecommendedGender -Sibling 6M;FM = Male; F = Femalefdi_q10_6c
demo_sib6_diagnosisString25RecommendedDiagnosis (if any) Sibling 6fdi_q10_6e
resp_relationshipIntegerRecommendedRespondent's relationship to child1 = Mother (biological); 2 = Stepmother; 3 = Adoptive mother; 4 = Grandmother; 5 = Foster mother; 6 = Other; 7 = Father (biological); 8 = Stepfather; 9 = Adoptive father; 10 = Grandfather; 11 = Foster fatherfdi_q11
resp_ageIntegerRecommendedRespondent's age0::1200In monthsfdi_q12a
fdi_q13_moreString20RecommendedDescribe more than one race: respondent
fdi_q19IntegerRecommendedHousehold income1 :: 131=$20,000 or less; 2=$20,001-$40,000; 3=$40,001-$60,000; 4=$60,001-$80,000; 5=$80,001-$100,000; 6=$100,001 - $125,000; 7=$125,001-$150,000; 8=$150,000-$200,000; 9=$200,000 or higher; 10=I don't know; 11=I prefer not to answer; 12 = $60,001 - $90,000;13 = More than $90,000
adults_householdIntegerRecommendedNumber adults in householdfdi_q20a
fdi_q20a_1___1IntegerRecommendedAdult in the house is parent0; 10=No; 1=Yes
fdi_q20a_1___2IntegerRecommendedAdult in the house is step-parent0; 10=No; 1=Yes
fdi_q20a_1___3IntegerRecommendedAdult in the house is adoptive parent0; 10=No; 1=Yes
fdi_q20a_1___4IntegerRecommendedAdult in the house is foster parent0; 10=No; 1=Yes
fdi_q20a_1___5IntegerRecommendedAdult in the house is grandparent0; 10=No; 1=Yes
fdi_q20a_1___6IntegerRecommendedAdult in the house is aunt/uncle0; 10=No; 1=Yes
fdi_q20a_1___7IntegerRecommendedAdult in the house is cousin0; 10=No; 1=Yes
fdi_q20a_1___8IntegerRecommendedAdult in the house is family friend0; 10=No; 1=Yes
fdi_q20a_1___9IntegerRecommendedAdult in the house is another relative0; 10=No; 1=Yes
fdi_q20a_2String25RecommendedDescribe other relative adult
fdi_q20bIntegerRecommendednumber of children living in the house
fdi_q20b_1___1IntegerRecommendedChild in the house is a sibling0; 10=No; 1=Yes
fdi_q20b_1___2IntegerRecommendedChild in the house is a step-sibling0; 10=No; 1=Yes
fdi_q20b_1___3IntegerRecommendedChild in the house is an adoptive sibling0; 10=No; 1=Yes
fdi_q20b_1___4IntegerRecommendedChild in the house is a cousin0; 10=No; 1=Yes
fdi_q20b_1___5IntegerRecommendedChild in the house is a family friend0; 10=No; 1=Yes
fdi_q20b_1___6IntegerRecommendedChild in the house is another relative0; 10=No; 1=Yes
fdi_q20b_2String150RecommendedDescribe other relative child
fdi_q21IntegerRecommendedSpouse/partner's age
fdi_q22_moreString25RecommendedDescribe more than one race:
employotrString50RecommendedEmployment situation other, specifyfdi_26a
fdi_q29___2IntegerRecommendedSpanish is spoken in the home0; 10=No; 1=Yes
nonenglishString20RecommendedNon-English language spoken at home0 = No; 1 = Yesfdi_q29___3
oth_langString150RecommendedWhat other languages are you fluent in?fdi_q29a
child_englishexposureIntegerRecommendedHow often do you and your spouse speak to your child in English1;2;31 = We always talk to him/her in English; 2 = We sometimes talk to him/her in English; 3 = We rarely talk to him/her in Englishfdi_q30
fdi_q31aIntegerRecommendedRespondent knows biological mother's birthdate0; 10=No; 1=Yes
fdi_q31bIntegerRecommendedRespondent knows biological mother's age0; 10=No; 1=Yes
ques_agebmIntegerRecommendedAge -Biological Mother(in months)0 :: 1200; -999-999 = Missing valuefdi_q31b2
bio_mother_raceString150RecommendedBiological Mother RaceAmerican Indian/Alaska Native; Asian; Hawaiian or Pacific Islander; Black or African American; White; More than one race; Unknown or not reportedfdi_q32
mother_other_raceString50RecommendedMother Other race (please specify):fdi_q32_other
p_race_birString50RecommendedMother race, specified for more than one racefdi_q32_more
bio_mother_ethnicityString50RecommendedBiological Mother EthnicityHispanic or Latino;Not Hispanic or Latino; No Answerfdi_q33
fdi_q34aIntegerRecommendedRespondent knows biological father's birthdate0; 10=No; 1=Yes
fdi_q34bIntegerRecommendedRespondent knows biological father's age0; 10=No; 1=Yes
ques_agebfIntegerRecommendedAge -Biological Father(in months)0 :: 1200; -999-999 = Missing valuefdi_q34b1
bio_father_raceString150RecommendedBiological Father RaceAmerican Indian/Alaska Native; Asian; Hawaiian or Pacific Islander; Black or African American; White; More than one race; Unknown or not reportedfdi_q35
father_other_raceString20RecommendedFather Other race (please specify):fdi_q35_other
p2_race_birString50RecommendedFather race, specified for more than one race/biracialfdi_q35_more
bio_father_ethnicityString50RecommendedBiological Father ethnicity (Hispanic or Latino, Not Hispanic or Latino, No Answer)Hispanic or Latino; Not Hispanic or Latino; No Answerfdi_q36
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: pqdem01 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.