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Table 2 Main characteristics of subjects with AR (n = 3363) and with NAR (n = 1586)

From: The gender, age and risk factor distribution differs in self-reported allergic and non-allergic rhinitis: a cross-sectional population-based study

  AR NAR p value
Median age at onset (years) (IQR) 16 (10–25) 18 (10–30) <0.001
Self-reported sinusitis (%) 33.9 38.6 0.002
Self-reported nasal polyposis (%)a 6.6 5.2 0.177
Use of drugs for rhinitis in the last 12 months (%) 55.8 29.7 <0.001
  1. IQR interquartile range: (1st quartile–3rd quartile)
  2. aInformation not available for the centres of Ancona, Perugia/Terni and Sassari. The reported percentages refer to 1876 subjects with AR (of them 215 did not report whether they had nasal polyposis) and 855 subjects with NAR (of them 34 did not report whether they had nasal polyposis)