Tab.3 t-Student test for coupled data with n-1 degrees of freedom (DoF 12-1 =11) and P value < 0,05
From: GERD in elderly patients: surgical treatment with Nissen-Rossetti laparoscopic technique, outcome
t-Student | Pre-surgical value vs one month-post-surgical values | Pre-surgical value vs six months-post-surgical values | One month-post-surgical values vs six months-post-surgical values |
|---|---|---|---|
LES tone | P=0.042 | P=0.038 | P=0.20 |
LES relaxation | P=0.032 | P=0.029 | P=0.28 |
Peristalsis amplitude | P=0.041 | P=0.038 | P=0.37 |
N° of acid refluxes | P=0.026 | P=0.015 | P=0.52 |
Esophageal acid exposure fraction of time | P=0.019 | P=0.004 | P=0.46 |
SAP | P=0.011 | P=0.01 | P=0.13 |