Fig. 1From: Impact of insufficient drug efficacy of antiparkinson agents on patient’s quality of life: a cross-sectional studyThe proportion of patients experienced insufficient efficacy of anti-parkinson medication depend on the time zone stratified by Hoehn &Yahr stages: Data excluding107 patients without response to the question about insufficient efficacy of medication. Data excluding 976 patients with answer as unclear to Hoehn and Yahr stage from stratified analysisBack to article page