# Positive Predictive Value of the Dx-pH Probe for Predicting PPI Response in LPR

> **NCT01755221** · — · COMPLETED · sponsor: **Northwestern University** · enrollment: 42 (actual)

## Conditions studied

- Laryngopharyngeal Reflux (LPR)
- Extraesophageal Reflux
- Reflux Laryngitis
- Posterior Laryngitis

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01755221
- **Lead sponsor:** Northwestern University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2012-08
- **Primary completion:** 2014-11
- **Final completion:** 2016-08
- **Target enrollment:** 42 (ACTUAL)
- **Last updated:** 2024-04-24

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01755221

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01755221, "Positive Predictive Value of the Dx-pH Probe for Predicting PPI Response in LPR". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT01755221. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*