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Manometric data of 146 GERD patients
| MANOMETRIC PARAMETERS | HP positive | HP negative | P |
| Patients | 35 | 111 | |
| LES pressure (mmHg) | 19.4 ± 9.7 | 19.7 ± 10.7 | NS |
| Motility impairment | 26 (74.3%) | 88 (79.3%) | NS |
| Esophageal wave length (sec) | 3.2 | 3.1 | NS |
| Esophageal wave height | 67.9 ± 28. | 72.4 ± 39.3 | NS |
