Cite Score:
0.65
CITE SCORE SCOPUS

Evolution of the pH Level over Time in Patients Suffering from Reflux.

AUTHORS

M Jamaluddin ** , +

How to Cite: Jamaluddin M. Evolution of the pH Level over Time in Patients Suffering from Reflux., Shiraz E-Med J. Online ahead of Print ; 9(3):141-148.

ARTICLE INFORMATION

Shiraz E-Medical Journal: 9 (3); 141-148
Article Type: Research Article
Received: August 13, 2007
Accepted: July 15, 2008

Crossmark

CHEKING

READ FULL TEXT
Abstract

The esophagus carries food from the mouth to the stomach. Continuous exposure to the refluxed stomach acid on the esophageal lining causes a burning sensation in the chest or throat known as heartburn. In this study an attempt has been made to investigate the evolution of the pH level over time. In this study we used the Linear Mixed Model to handling the simulated longitudinal data. We built our model considering random intercept and random slope with cubic trend of time reflected by the mean profile and variance structure. We found that all the components of cubic trend of time (hour, hour2 and hour3) are significant at 5% significance level. This also coincide the mean profile in exploratory data analysis, that is, cubic evolution of the pH level over time exists. The study revealed that there is significant evolution of the pH level over cubic time effect exists in the patients.

Keywords

Acid Reflux, Linear Mixed Model, simulation, pH level.

© 0, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

Full Text

Full text is available in PDF

COMMENTS

LEAVE A COMMENT HERE: