Fig. 1. EQ-5D indexes of the (A) HC, NC, and CC groups and (B) newly referred with CC and RUCC patients of the CC group, in means (dots) and 95% confidence intervals (whiskers). P values for between-group comparisons were obtained using a post-hoc Bonferroni test. The relation between EQ-5D index score among the three groups was tested with the Jonckheere-Terpstra statistic on trend (indicated as P for trend).

EQ-5D, EuroQoL 5-dimension; HC, healthy control; NC, non-cough control; CC, chronic cough; RUCC, refractory or unexplained chronic cough.