Table 5. Current epidemiologic data on CRSwNP.

The table shows the region where the investigation took place (“region”), the first author of the paper (“paper”), the year of data collection or if not mentioned otherwise of the publication (“year”), the incidence (if possible with confidence interval), annotations on the methods as well as the country where the investigation had been performed. The data of this table refer to the paragraph of “Special subtypes of CRS, CRS with and without identification of nasal polyps”.