National Institute of Mental Health Data Archive (NDA) Sign In
National Institute of Mental Health Data Archive (NDA) Sign In

Success! An email is on its way!

Please check your email to complete the linking process. The link you receive is only valid for 30 minutes.

Check your spam or junk folder if you do not receive the email in the next few minutes.

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.
Create an Account
NIMH Data Archive (NDA) Sign In or Create An Account
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
Data Access Terms - Decline Terms

Are you sure you want to cancel? This will decline terms and you will not be authorized for access.

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

Berlin Questionnaire Sleep Apnea

782 Shared Subjects

Clinical Assessments
View Change History
Query Element Name Data Type Size Required Description Value Range Notes Aliases
subjectkey GUID Required The NDAR Global Unique Identifier (GUID) for research subject NDAR*
src_subject_id String 20 Required Subject ID how it's defined in lab/project record_id
interview_age Integer Required Age in months at the time of the interview/test/sampling/imaging. 0 :: 1260 Age 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_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY
sex String 20 Required Sex of subject at birth M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender, sex
Query bas_1 Integer Recommended Do you snore?
1 = Yes; 2 = No; 3 = Don't know berlin_snore, snore
Query height_met Float Recommended Height - Metric Unit 999 = Missing height
Query weight_met Float Recommended Weight - Metric Unit 999 = Missing weight
Query bas_2 Integer Recommended Your snoring is 1::4 1 = Slightly louder than breathing; 2 = As loud as talking; 3 = Louder than talking; 4 = Very loud and can be heard in adjacent rooms berlin_snorevol, snorevolume
Query bas_3 Integer Recommended How often do you snore 1::5 1 = Nearly every day; 2 = 3 - 4 times a week; 3 = 1-2 times a week; 4 = 1-2 times a month; 5 = Never or nearly never berlin_snorefreq, snorefreq
Query bas_4 Integer Recommended Has your snoring ever bothered other people?
1 = Yes; 2 = No; 3 = Don't know berlin_snorebother, snorebother
Query bas_5 Integer Recommended Has anyone noticed that you quit breathing during your sleep? 1::5 1 = Nearly every day; 2 = 3 - 4 times a week; 3 = 1-2 times a week; 4 = 1-2 times a month; 5 = Never or nearly never berlin_stopbreathslp, stopbreathsleep
Query bas_6 Integer Recommended How often do you feel tired or fatigued after you sleep? 1::5 1 = Nearly every day; 2 = 3 - 4 times a week; 3 = 1-2 times a week; 4 = 1-2 times a month; 5 = Never or nearly never berlin_tiredafterslp, tiredaftersleep
Query bas_7 Integer Recommended During your wake time, do you feel tired, fatigued, or not up to par? 1::5 1 = Nearly every day; 2 = 3 - 4 times a week; 3 = 1-2 times a week; 4 = 1-2 times a month; 5 = Never or nearly never berlin_waketired, waketimetired
Query bas_8 Integer Recommended Have you ever nodded off or fallen asleep while driving a vehicle?
1 = Yes; 2 = No berlin_slpdriv, sleepwhiledriving
Query bas_9 Integer Recommended If yes: How often does this occur? 1::5 1 = Nearly every day; 2 = 3 - 4 times a week; 3 = 1-2 times a week; 4 = 1-2 times a month; 5 = Never or nearly never berlin_slpdrivfreq, sleepwhiledrivingfreq
Query bas_10 Integer Recommended Do you have high blood pressure?
1 = Yes; 2 = No; 3 = Don't know berlin_highbp, highbp
Query bas_cat1 Integer Recommended Category 1 score items 1,2,3,4,5 berlincat1_rs
Query bas_cat2 Integer Recommended Category 2 score items 6,7,8 berlincat2_rs
Query bas_cat3 Integer Recommended Category 3 score BMI and item 10; 1=positive; 0= negative berlincat3_rs
Query bas_tot Integer Recommended Sleep Apnea total score 0;1 0=Low Risk; 1= High Risk berlinhighrisk_rs
site String 101 Recommended Site Study Site siteid
Query timept Integer Recommended Time Point 888 = not applicable; 999 = missing timepoint
Query berlincat1_pos Integer Recommended BERLIN Symptom Category 1 Positive [1=Yes]
Query berlincat2_pos Integer Recommended BERLIN Symptom Category 2 Positive [1=Yes]
Query berlincat3_pos Integer Recommended BERLIN Symptom Category 3 Positive [1=Yes]
Query weight_std Float Recommended Weight - Standard Unit -1 = Not known; 999 = Missing berlin_weight
Query vtl007 Float Recommended Height in inches berlin_height_in
Query height_std Float Recommended Height - Standard Unit -1 = Not known; 999 = Missing berlin_height_ft
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.