factors associated with functional constipation in iranian adults: a population-based study

aim : to determine the prevalence of constipation and its associated factors using rome iii criteria in iranian population. background : due to the appearance of amoxicillin-resistant h. pylori strains all over the world, the decreased efficacy of conventional amoxicillin-containing treatment regimens has become a matter of concern. patients and methods : a cross-sectional study conducted in tehran province from may 2006 to december 2007, including 18180 adult persons. in the first part of interview, characteristics and gastrointestinal symptoms were considered those who reported at least one symptom referred for the second interview consisted of questions about different gastrointestinal disorders based on rome iii criteria. results : 6.33% of interviewees reported constipation and 2.41% had functional constipation (3.5% women and 1.3% men). the prevalence of constipation increases in the group older than 50 years. constipation was more common in none or low educated than educated groups. conclusion : it can be concluded that constipation has a less common prevalence in the general iranian population. women, older, obese, married and low education subjects are more likely to suffer from constipation.