title: Prevalence and risk factors of chronic rhinosinusitis in South Korea according to diagnostic criteria.
abstract: We aimed to compare the prevalence and risk factors of chronic rhinosinusitis (CRS) using two different diagnostic criteria with the same statistical data from the Korean National Health and Nutrition Examination Survey in 2009.
  
  
  
  Symptom-based CRS was defined as CRS diagnosed by questionnaires related to nasal symptoms. Endoscopy-based CRS was defined based on endoscopic findings and nasal symptoms of symptom-based CRS.
  
  
  
  The overall prevalence of CRS based on the different diagnostic criteria was as follows: symptom-based CRS was 10.78% (797 of 7,394) and endoscopy-based CRS was 1.20% (88 of 7,343). Comparing symptom-based CRS to endoscopy-based CRS showed slight agreement (kappa = 0.183 (0.150-0.216, 95% confidence interval)). Allergic rhinitis was identified as a common risk factor for CRS based on the two diagnostic criteria.
  
  
  
  The prevalence and risk factors of CRS were quite different from each other according to the different criteria, even in the same population. Therefore, it would be important to consider what specific diagnostic criteria have been adopted in the studies comparing the prevalence of CRS.
authors.affiliation: Department Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: C
authors.initials: C
authors.lastname: Cho
authors.affiliation: Department Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: E J
authors.initials: EJ
authors.lastname: Lee
authors.affiliation: Department Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Y S
authors.initials: YS
authors.lastname: Suh
authors.affiliation: Department Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: B I
authors.initials: BI
authors.lastname: Choi
authors.affiliation: Department Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: K S
authors.initials: KS
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000453:epidemiology*; D002648:Child; D002908:Chronic Disease; D003920:Diabetes Mellitus / Q000453:epidemiology*; D004724:Endoscopy; D005157:Facial Pain; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D007252:Influenza Vaccines / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D015508:Nasal Obstruction; D009300:Nasal Septum / Q000002:abnormalities; D000857:Olfaction Disorders; D015995:Prevalence; D056910:Republic of Korea / Q000453:epidemiology; D012220:Rhinitis / Q000175:diagnosis / Q000453:epidemiology*; D065631:Rhinitis, Allergic / Q000453:epidemiology; D012307:Risk Factors; D012852:Sinusitis / Q000175:diagnosis / Q000453:epidemiology*; D012907:Smoking / Q000453:epidemiology*; D013315:Stress, Psychological / Q000453:epidemiology*; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D007252:Influenza Vaccines