# Comparison Of The Berlin Questionnaire To The Portland Sleep Quiz

> **NCT01269073** · — · WITHDRAWN · sponsor: **Akram Khan**

## Conditions studied

- Sleep Apnea

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01269073
- **Lead sponsor:** Akram Khan
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** WITHDRAWN
- **Start date:** 2011-01
- **Primary completion:** 2012-12
- **Final completion:** 2012-12
- **Target enrollment:** 0 (ACTUAL)
- **Last updated:** 2019-08-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01269073

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01269073, "Comparison Of The Berlin Questionnaire To The Portland Sleep Quiz". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01269073. Licensed CC0.

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