Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Summary of esophageal pH measures
| Symptom | Baseline (off PPI) | 6 months (off PPI) | P value* | ||
|---|---|---|---|---|---|
| n | Mean (SD) | n | Mean (SD) | ||
| pH ≤ 4 (%) total | 66 | 10.9 (10.7) | 64 | 7.3 (5.1) | <0.001 |
| pH ≤ 4 (%) upright | 66 | 12.0 (11.3) | 60 | 8.5 (6.1) | 0.013 |
| pH ≤ 41 (%) supine | 66 | 6.8 (11.0) | 59 | 5.4 (6.9) | 0.48 |
| Total episodes | 66 | 170.8 (181.6) | 64 | 100.4 (105.9) | <0.001 |
| Longest episode (min) | 66 | 23.9 (22.1) | 63 | 21.1 (20.0) | 0.28 |
* P value versus baseline Wilcoxon signed-rank test
