Concordance Rates of Diagnosing Candidate Pharyngeal Acid Reflux and Hypopharyngeal Multichannel Intraluminal Impedance-pH-proven Pharyngeal Acid Reflux Episodes Between 2 Independent Observers
| HMII-pH measurements | Concordance rates between 2 observers (%) |
|---|---|
| Candidate PAR episodes | 88.2% (105/119) |
| Impedance | |
| Full column reflux | 98.9% (94/95) |
| Pharyngeal reflux | 92.3% (84/91) |
| HMII-pH-proven PAR episodes | 95.4% (83/87) |
PAR, pharyngeal acid reflux; HMII-pH, hypopharyngeal multichannel intraluminal impedance-pH.