Fig. 1From: A randomized, double-blinded, placebo-controlled clinical trial of duloxetine hydrochloride enteric-coated tablets in the treatment of refractory chronic coughThe flow of patients through the study. VAS, visual analog scale; LCQ, Leicester Cough Questionnaire; CET, cough evaluation test; PHQ-9, Patient Health Questionnaire-9; MDI, Major Depression Inventory; GAD-7, the Generalized Anxiety Disorder-7 scale; LES-32, Life Events ScaleBack to article page