Defining the risk factors for acute, subacute and chronic cough: a cross-sectional study in a Finnish adult employee population

Author:

Lätti Anne M,Pekkanen Juha,Koskela Heikki OORCID

Abstract

ObjectivesChronic cough is linked to various long-standing risk factors like asthma, chronic rhinitis and oesophageal reflux disease. On the contrary, acute and subacute cough are usually considered to be caused by acute respiratory infections. Little is known about the possible long-standing risk factors for acute and subacute cough. In this study, we have identified the long-standing risk factors for acute, subacute and chronic cough in order to identify the risk factors specifically associated with chronic cough.DesignA comprehensive 80-item questionnaire was sent via email to the participants.SettingA community-based study to all public service employees of two towns in central Finland.ParticipantsThere were 13 980 employees, of them 3697 responded (26.4%). Among the responders, there were 199 subjects with current daily acute cough (duration <3 weeks, prevalence 5.4%), 126 subjects with current daily subacute cough (duration 3–8 weeks, prevalence 3.4%) and 267 subjects with current daily chronic cough (duration >8 weeks, prevalence 7.2%).Primary outcome measuresThe risk factors that associated with each cough subtype. The subjects without any cough formed the reference group.ResultsSeveral risk factors were associated with both short and long cough subtypes namely family history of chronic cough, moisture damage exposure and number of reported somatic symptoms. Furthermore, allergy was associated with acute and subacute cough. Current asthma and chronic rhinitis were associated with subacute and chronic cough. Oesophageal reflux disease and advanced age were associated with chronic cough.ConclusionsThe specific risk factors for chronic cough were oesophageal reflux disease and advanced age. Acute and subacute cough should not be regarded merely as symptoms of acute respiratory infections but possible manifestations of long-standing risk factors. A new risk factor for all cough types was family history of chronic cough.

Funder

Hengityssairauksien Tutkimussäätiö

Kuopion Hengityssäätiö

Publisher

BMJ

Subject

General Medicine

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