Population-Based Study on the Prevalence and Correlates of Orthostatic Hypotension/Hypertension and Orthostatic Dizziness

There are no epidemiological studies of orthostatic hypotension (OH)/hypertension (OHT) and orthostatic dizziness (OD) in adults across all age groups. The aim of this study is to examine the prevalence and correlates of OH, OHT, and OD in community dwellers aged > or = 20 years. OH was defined as a decline in systolic/ diastolic blood pressure of > or = 20/10 mmHg when a person stood up from a supine position. OHT was a postural increase of > or = 20 mmHg in systolic blood pressure. OD was dizziness, lightheadedness, or faintness as the person stood up. A total of 1,638 adults were included. Subjects were classified as normotensive, pre-hypertensive, or hypertensive. The prevalences of OH, OHT, and OD were 15.9, 1.1, and 4.8%, respectively. OD was associated with neither OH nor OHT. None of the subjects aged or = 40 years, age (p = 0.003), pre-hypertension (p = 0.024), hypertension (p = 0.008), and diabetes mellitus (p = 0.036) were independently related to OH. Age (p or = 40 years. OH and OHT cannot be determined solely from the presence of OD because of their dissociation.