Background: Despite efforts to maintain the intestinal tissue and treat gastrointestinal disease,
a large number of patients undergo ostomy surgery each year. Using stoma reduces the …

Colorectal cancer is a rapidly rising trend in Asia. The incidence in many Asian countries is
on par with the West. Several studies have provided data regarding the survival of patients …

Background and aim The incidence of colorectal cancer is increased in Iran in recent years
and colorectal cancer is the fourth most common cancer in both sexes. The aim of this study …

Background Colorectal cancer (CRC) is one of the most common cancers worldwide. But
information regarding CRC in Iran is limited; the aim of this study was to investigate the …

Materials and Methods: This study was a cross-sectional household survey conducted from
May 2006 to December 2007 in Tehran province, Iran, including 18,180 participants who …

Background: Researchers in medical sciences often tend to prefer Cox semi-parametric
instead of parametricmodels for survival analysis because of fewer assumptions but under …

Background: Many factors have been linked to the occurrence of constipation, but few studies
exist regarding the link between obesity and constipation. The aim of this study was to …

Introduction: Design and implementation of screening programs in each country must be
based on epidemiological data. Despite the relatively high incidence of CRC, there is no …

Background: The prevalence of irritable bowel syndrome (IBS) is relatively high, but up to
now, no population based study in Iran has used the ROME III criteria. The aim of the present …

Background and study aims Gastro-oesophageal reflux disease (GERD) and dyspepsia are
common digestive disorders that inflict serious harm, burden and economic consequences …