Age-related prevalence of chronic rhinosinusitis and nasal polyps and their relationships with asthma onset

Publication date: Available online 9 February 2018
Source:Annals of Allergy, Asthma & Immunology
Author(s): Ha-Kyeong Won, Young-Chan Kim, Min-Gyu Kang, Han-Ki Park, Seung-Eun Lee, Min-Hye Kim, Min-Suk Yang, Yoon-Seok Chang, Sang-Heon Cho, Woo-Jung Song
BackgroundChronic rhinosinusitis (CRS) is a major disease condition with high morbidity, and may influence lower airway disease status in adults. However, its associations with adult asthma onset and activity have not been examined in detail in a general adult population.ObjectiveTo investigate the relationships between CRS with nasal polyps and asthma characteristics.MethodsA cross-sectional dataset from 17,506 adult participants (age≥18 years) in the Korean National Health and Nutrition Examination Survey 2010-2012 was analyzed. CRS was defined using structured questionnaires according to the international guideline, and presence of nasal polyps was objectively assessed using nasal endoscope. Presence of asthma and its onset and current activity were asked using structured questionnaires.ResultsCRS was significantly related with asthma, but the relationships were distinct by CRS and asthma status. CRS with nasal polyps (CRSwNP) was significantly associated with adult-onset asthma (onset after 18 years) or late-onset asthma (onset after 40 years), whereas CRS without nasal polyps (CRSsNP) were related to childhood-onset asthma (onset before 18 years) or early-onset asthma (onset before 40 years) in adults. Both CRS subgroups showed significant associations with current asthma but not with past asthma. However, comorbid asthma rate was less than 10% among subjects with CRS.ConclusionThis study found distinct age-related patterns of CRSwNP and asthma and demonstrated their significant associations in a general population. However, low prevalence of asthma in CRSwNP is in sharp contrast to the findings in Western populations, which warrants further investigation for ethnic or regional difference in CRSwNP-asthma relationships.



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