Fig. 3From: Long-term prognosis of chronic cough: a prospective, observational cohort studyThe proportion of subjects who suffered from continuing regular cough at five years’ follow-up related to the number of self-reported background disorders (esophageal reflux disease, asthma, or chronic rhinitis). Eighteen subjects reported no background disorders, 25 reported one disorder, 17 reported two disorders, and 8 reported three disorders. P = 0.03 between the groups (Chi-square test), p = 0.007 for the trend between the number of background disorders and continuing cough (univariate logistic regression analysis)Back to article page