Fig. 1From: Integrated analysis of droxidopa trials for neurogenic orthostatic hypotensionOHQ items evaluate orthostatic symptoms (OHSA; n = 6) and activities of daily living (OHDAS; n = 4) [14]. OHDAS = Orthostatic Hypotension Daily Activity Scale; OHQ = Orthostatic Hypotension Questionnaire; OHSA = Orthostatic Hypotension Symptom AssessmentBack to article page