Loading...

Reset Password

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.

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.

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:

Subscribe to our mailing list

Mailing List(s)
Email Format

You are now leaving the National Database for Autism Research (NDAR) web site to go to:

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

Disclaimer

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

Selected Filters
No filters selected

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

Description
Value Range
Notes
Data Structures with shared data
No filters have been selected

Parenting Stress Index (4th Edition)

psi_iv_

01

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/projectaid
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
psi1IntegerRecommendedI often have the feeling that I cannot handle things very well1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_1
psi2IntegerRecommendedI find myself giving up more of my life to meet my childrens needs than I ever expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_2
psi3IntegerRecommendedI feel trapped by my responsibilities as a parent1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_3
psi4IntegerRecommendedSince having this child, I have been unable to do new and different things1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_4
psi5IntegerRecommendedSince having a child, I feel that I am almost never able to do things that I like to do1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_5
psi6IntegerRecommendedI am unhappy with the last purchase of clothing I made for myself1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_6
psi7IntegerRecommendedThere are quite a few things that bother me about my life1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_7
psi8IntegerRecommendedHaving a child has caused more problems than I expected in my relationship with my spouse1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_8
psi9IntegerRecommendedI feel alone and without friends1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_9
psi10IntegerRecommendedWhen I go to a party, I usually expect not to enjoy myself1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_10
psi11IntegerRecommendedI am not as interested in people as I used to be1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_11
psi12IntegerRecommendedI don't enjoy things as I used to1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_12
psi13IntegerRecommendedMy child rarely does things for me that make me feel good1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_13
psi16IntegerRecommendedWhen I do things for my child, I get the feeling that my efforts are not appreciated very much1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_14
psi15IntegerRecommendedMy child smiles at me much less than I expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_15
psi14IntegerRecommendedMost times I feel that my child does not like me and does not want to be close to me1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_16
psi_iv_17IntegerRecommendedMy child is very emotional and gets upset easily.1::5; 888; 9991=Strongly agree; 2=Agree; 3=Not sure; 4=Disagree; 5=Strongly disagree; 888=NA; 999=missing
psi18IntegerRecommendedMy child doesn't seem to learn as quickly as most children1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_18
psi19IntegerRecommendedMy child doesn't seem to smile as much as most children1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_19
psi20IntegerRecommendedMy child is not able to do as much as I expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_20
psi21IntegerRecommendedIt takes a long time and it is very hard for my child to get used to new things1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_21
psi_iv_23IntegerRecommendedI feel that I am (Parent Question)1::5; 888; 9991= A very good parent; 2= A better-than average parent; 3= An average parent; 4= A person who has some trouble being a parent; 5= Not very good at being a parent; 888=NA; 999=missingpsi_iv_22
psi23IntegerRecommendedI expected to have closer and warmer feelings for my child than I do and this bothers me1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_23
psi24IntegerRecommendedSometimes my child does things that bother me just to be mean1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_24
psi25IntegerRecommendedMy child seems to cry or fuss more often than most children1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_25
psi26IntegerRecommendedMy child generally wakes up in a bad mood1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_26
psi27IntegerRecommendedI feel that my child is very moody and easily upset1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_27
psi_iv_28IntegerRecommendedCompared to the average child, my child has a great deal of difficulty in getting used to changes in schedules or changes around the house.1::5; 888; 9991=Strongly agree; 2=Agree; 3=Not sure; 4=Disagree; 5=Strongly disagree; 888=NA; 999=missing
psi29IntegerRecommendedMy child reacts very strongly when something happens that my child doesn't like1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_29
psi17IntegerRecommendedWhen playing, my child doesn't often giggle or laugh1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_30
psi31IntegerRecommendedMy child's sleeping or eating schedule was much harder to establish than I expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_31
psi32IntegerRecommendedI have found that getting my child to do something or stop doing something is1::5; 888; 9991=Much easier than I expected; 2=Somewhat easier than I expected; 3=About as hard as I expected; 4=Somewhat harder than I expected; 5=Much harder than I expectedpsi_iv_32
psi33IntegerRecommendedThink carefully and count the number of things which your child does that bother you (e.g., dawdles, refuses to listen, overactive, cries, interrupts, fights, whines, etc.)1::5; 888; 9991=1-3; 2=4-5; 3=6-7; 4=8-9; 5=10 or more; 888=NA; 999=missingpsi_iv_33
psi34IntegerRecommendedThere are some things my child does that really bother me a lot1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_34
psi35IntegerRecommendedMy child turned out to be more of a problem than I had expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_35
psi36IntegerRecommendedMy child makes more demands on me than most children1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missingpsi_iv_36
psi_iv_37String100RecommendedIn your own words, can you tell me what about this child causes you the most stress?
psi22IntegerRecommendedI feel that I am1::5; 888; 9991=A very good parent; 2=A better than average parent; 3=An average parent; 4=A person who has some trouble being a parent; 5=Not very good at being a parent; 888=NA; 999=missing
psi28IntegerRecommendedMy child does a few things which bother me a great deal1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi30IntegerRecommendedMy child gets upset easily over the smallest thing1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psidrxFloatRecommendedDefensive Responding (mean score)
psidrtFloatRecommendedDefensive Responding (total score)
psipdxFloatRecommendedParental Distress (mean score)
psipdtFloatRecommendedParental Distress (total score)
psipcdixFloatRecommendedParent-Child Dysfunctional Interaction (mean score)
psipcditFloatRecommendedParent-Child Dysfunctional Interaction (total score)
psidcxFloatRecommendedDifficult Child (mean score)
psidctFloatRecommendedDifficult Child (total score)
psitotlxFloatRecommendedTotal Score: Total Stress (mean score)
psitotltFloatRecommendedTotal Score: Total Stress (total score)raw_psi_score
psitotalstressptileFloatRecommendedParenting Stress Total Percentile888=not applicable; 999=missingprctile_psi
psi28aIntegerRecommendedCompared to the average child, my child has a great deal of difficulty in getting used to changes in schedules or changes around the house1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi35aIntegerRecommendedMy child's behavior is more of a problem than I expected.1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
days_baselineIntegerRecommendedDays since baseline
assbdicString5RecommendedAssessment PointD;14;E;24;LB;36;72;96;120; 9; B; 3; 7; 144; 168;192; CD=MTA baseline assessment; 14=MTA 14 month assessment; E=MTA early termination assessment; B = MTA Pre-Baseline Screening Assessment (579/579); 09 = MTA 9 Month Assessment (530/530); 24=MTA 24 month assessment; LB=LNCG baseline assessment; 36=MTA and LNCG 3 year assessment; 72=MTA and LNCG 6 year assessment; 96=MTA and LNCG 8 year assessment; 03 = MTA 3 Month Assessment (438/687);120=MTA and LNCG 10 year assessment; 7= 7th Grade Assessment (221/276); 144 = MTA & LNCG 12 Month Assessment (578/578); 168 = MTA & LNCG 14 Month Assessment (585/585); 192 = MTA & LNCG 16 Month Assessment (505/505); C = MTA Pre-Baseline Screening Assessment (78/78)
relationshipString255RecommendedRelationship of respondent to individual1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25;26;27;28;29;30;31;32;33;34;35;36;37;38;39;40;41;42;43;44;45;46;47;48;49;50;51;52;53;54;55;56;57;58;59;60;61;62;63;64;65;66;67;68;69;70;71;72;73;74;75;76;77;78;79;80;81;82;83;84; -9991 = 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; 90= Other, specify; -999= Missing; 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
actbdicIntegerRecommendedActive status0::50=Inactive-Data collected after the 14 month treatment phase/after early termination from treatment phase/prior to treatment phase; 1=Active-Data collected during the 14 month treatment phase while subject received originally assigned treatment regardless of degree of compliance; 2=Active-This is the last active assessment for subjects who were about to violate treatment arm by receiving alternate treatment; 3=Active-This is the last active assessment for subjects who were about to leave the study by moving away;4=Yes, Active; 5=No, Not Active
siteString100RecommendedSiteStudy Site
sjtypIntegerRecommendedSubject type1;21=MTA randomized trial subject; 2=Local normative comparison group (LNCG) subject
psi37IntegerRecommendedWhen I run into a problem taking care of my twins I have a lot of people that I can talk to for help or advice1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi38IntegerRecommendedBeing a parent is harder than I thought it would be1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi39IntegerRecommendedI can't make decisions without help1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi40IntegerRecommendedI have had many more problems raising kids/twins than I expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi41IntegerRecommendedThe number of children I have now is too many1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi42IntegerRecommendedI feel that I am successful most of the time when I try to get my twins to do something or not to do something1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi43IntegerRecommendedI often have the feeling that other people my own age don't particularly like my company1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi44IntegerRecommendedHaving kids/twins has been more expensive than I had expected1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi45IntegerRecommendedWhen I was young, I never felt comfortable holding or taking care of children1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi46IntegerRecommendedMost of my life is spent doing things for my kids/twins1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi47IntegerRecommendedI enjoy being a parent1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi48IntegerRecommendedIt takes a long time for parents to develop close, warm feelings for their children1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi49IntegerRecommendedIt is hard to find a place in our home where I can go to be by myself1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi50IntegerRecommendedI feel capable and on top of things when I am caring for my kids/twins1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi51IntegerRecommendedHaving kids/twins seems to have increased the number of problems we have with in laws and relatives1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi52IntegerRecommendedI often feel that my kids/twins needs control my life1::5; 888; 9991=Strongly disagree; 2=Disagree; 3=Not sure; 4=Agree; 5=Strongly agree; 888=NA; 999=missing
psi53IntegerRecommendedWhen you think about yourself as a parent which of the following 4 statements do you believe?: 1) I can handle anything that happens, 2) I can handle most things pretty well, 3) sometimes I have doubts, but I handle things without problems, or 4)I don=t think I handle things very well at all.1::41=handle anything; 2=most things; 3= sometimes doubt; 4=not well at all
psi54IntegerRecommendedWhich of these statements describes how easy it is for you to understand what your twins want or need? Is it: 1 very easy, 2 easy, 3 somewhat difficult, 4 very hard, or 5 usually I can=t figure out what the problem is1::51=very easy; 2=easy; 3=somewhat difficult; 4 very hard; 5=can't figure
version_formString100RecommendedForm used
studyString100RecommendedStudy
visitString50RecommendedVisit nameCharacter description of each type of visit
psi_1_percentIntegerRecommendedDefensive Responding Percentile
psi_2_percentIntegerRecommendedParental Distress (PD) Percentile
psi_3_percentIntegerRecommendedParent-Child Dysfunctional Interaction (P-CDI) Percentile
psi_4_percentIntegerRecommendedDifficult Child (DC) Percentile
daysrzIntegerRecommendeddays since randomization
visnumFloatRecommendedNumeric Visit Number-1.5 = Pre-Screening; -1 = Screening; 0 = Baseline; ## = Visit ## (from 1 to 10); Whole numbers = standard monthly visits; #.001 - #.009 = Unscheduled; #.1 = End of Phase 1; #.2 = End of Phase 2; #.3 = End of Phase 3; #.4 = End of Open Choice Phase; #.5 = End of Study; #.6 = Genetic Analysis; 1000=all visits
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: psi_iv_01 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.