To evaluate the prevalence of Gastroesophageal reflux disease in Azerbaijan. It is intended to evaluate the prevalence of the disease in the regions as well as the capital by cluster sampling ,ethitology and to compare the outcomes depending on the geographical location.

It is an observational, nationwide study. The GERD questionnaire (1994) requested from Mayo clinic, was received and validated. The questionnaire was translated by 3 individuals from english to azeri and back trasnlated by 3 native english speakers.

Power analysis was performed. The research was presented for the approval to Ethical Committee of Azerbaijan Medical University.

Prior to the actual study, a pilot study with smaller number of participants was performed and the results were evaluated.

Cluster sampling methodology was provided by the statistical department of Azerbaijan Medical University.

110 employees were hired for using a survey in different regions of Azerbaijan. Written consent was obtained from every person evaluated. Statistical ananlysis was performed.

Inclusion Criteria:

• Age: 18-80
• Both genders
• Hearburn
• Belching
• Regurgitation

Exclusion Criteria:

• protom pomp inhibitor use
• antibiotic use in the last 4 weeks
• upper GI surgery

18-80 age range

Azerbaijan is divided by clusters with a definite numbers of individuals to take survey on reflux disease in the given age range and calculated by proportion of males and females.