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Withdrawn No phase listed Observational

Comparison Of The Berlin Questionnaire To The Portland Sleep Quiz

ClinicalTrials.gov ID: NCT01269073

Public ClinicalTrials.gov record NCT01269073. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 12, 2026, 3:12 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

Comparison Of The Berlin Questionnaire To The Portland Sleep Quiz In Identification Of Patients At Risk For Obstructive Sleep Apnea

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This trial is enrolling patients who are already being seen at OHSU sleep disorder center or have been referred for clinical reasons by their physician to the OHSU sleep disorder center and are going to have a sleep study that would be paid for by their insurance company for clinical reasons. The purpose of this study is to determine whether the Portland sleep apnea quiz has a higher specificity and negative predictive value then the Berlin Sleep Questionnaire in a patient population with a high predisposition to sleep apnea presenting to a sleep center.

Study identification

NCT ID
NCT01269073
Recruitment status
Withdrawn
Study type
Observational
Phase
Not listed
Lead sponsor
Akram Khan
Other
Enrollment
Not listed

Conditions and interventions

Conditions

Interventions

Not listed

Eligibility (public fields only)

Age range
18 Years to 100 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jan 2011 (Type not available)
Primary completion
Dec 2012 (Estimated)
Completion
Dec 2012 (Estimated)
Last update posted
Aug 30, 2019

2011 – 2012

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
Oregon Health and Science University Portland Oregon 97239 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT01269073, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Aug 30, 2019 · Synced Oct 12, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT01269073 live on ClinicalTrials.gov.

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