Fig. 2

Meta-analysis: prevalence/incidence of cough of all durations in Western countries sorted by denominators. Estimates refer to consulting primary care patients of all age groups. * = study included adults only, § = study included patients ≥ 65 years, CI = confidence interval, k = number of (incidental) consultations because of cough / patients in consultation for cough / reason for encounter = cough, N = total number of (incidental) consultations / patients in consultation / reasons for encounter