title: Prevalence and risk factors of gastroesophageal reflux disease in Qashqai migrating nomads, southern Iran.
abstract: OBJECTIVE
  To investigate the prevalence and risk factors of gastroesophageal reflux disease (GERD) symptoms in Qashqai migrating nomads with a different life style in Fars province, southern Iran.
  
  
  METHODS
  In summer 2006, 748 Qashqai migrating nomads aged 25 years or more were enrolled using a multiple-stage stratified cluster random sampling method. A questionnaire consisting of demographic characteristics, lifestyle and GERD symptoms (heartburn, regurgitation, chest pain, dysphagia, hoarseness and cough) as completed for each subject.
  
  
  RESULTS
  The questionnaire was completed in 717 subjects. The prevalence rate of GERD, defined as reflux occurring at least one time per week in the preceding year, was 33% (237 subjects). The prevalence was higher in older individuals (36.0% vs 28.9%, P < 0.05) and in those with other gastrointestinal complaints (51.0% vs 27.8%, P < 0.001), but not different in obese and non-obese subjects. It was also higher in those consuming fruits and vegetables more than once a week (36.2% vs 17.3%, P < 0.001). GERD had a positive correlation with smoking (42.1% vs 27.8%, P < 0.001), but a negative relation with non-alcoholic beverages. The association between GERD and non-steroidal anti-inflammatory drugs (NSAIDs) consumption was also significant (40.2% vs 25.4%, P < 0.001).
  
  
  CONCLUSIONS
  The prevalence of GERD (33%) is very high in Qashqai migrating nomads which may be due to a lower socioeconomic and educational level of these people and difference in the life style. Older age, frequent consumption of fruits and vegetables, smoking and NSAIDs are risk factors for GERD in this population.
authors.affiliation: Gastroenterohepatology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Mostaghni
authors.forename: Davood
authors.initials: D
authors.lastname: Mehrabani
authors.forename: Farnaz
authors.initials: F
authors.lastname: Khademolhosseini
authors.forename: Seyed Jalil
authors.initials: SJ
authors.lastname: Masoumi
authors.forename: Fariba
authors.initials: F
authors.lastname: Moradi
authors.forename: Najaf
authors.initials: N
authors.lastname: Zare
authors.forename: Mehdi
authors.initials: M
authors.lastname: Saberi-Firoozi
mesh_terms: D000328:Adult; D016000:Cluster Analysis; D004032:Diet; D005260:Female; D005638:Fruit; D005764:Gastroesophageal Reflux / Q000453:epidemiology*; D006261:Headache / Q000453:epidemiology; D006801:Humans; D007492:Iran / Q000453:epidemiology; D008019:Life Style; D008297:Male; D017533:Marital Status; D009765:Obesity / Q000453:epidemiology; D050177:Overweight / Q000453:epidemiology; D015995:Prevalence; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology; D011795:Surveys and Questionnaires; D014171:Transients and Migrants / Q000706:statistics & numerical data*; D014675:Vegetables