Table 1

Survey items of the Korean National Health and Nutrition Examination Survey for chronic rhinosinusitis

Questions for chronic rhinosinusitis

  1. Have you noted a discoloured anterior or posterior nasal drip for more than 12 weeks during the past 12 months?

  2. Have you experienced nasal blockage, obstruction or congestion for more than 12 weeks during the past 12 months?

  3. Have you experienced facial pain or pressure for more than 12 weeks during the past 12 months?

  4. Have you experienced a reduction or loss of smell for more than 12 weeks during the past 12 months?

Endoscopic findings of chronic rhinosinusitis

  1. Check if there is mucopurulent discharge from the middle meatus

  2. Check if nasal polyps are present