[A statistical analysis of epistaxis between outpatients and inpatients]

Although we found several statistical studies on epistaxis, we found no reports discussing clinical differences in nasal bleeding between outpatients and inpatients. We therefore examined 103 inpatients (1998-2001) and 337 outpatients (2001) with epistaxis for gender, age, season, bleeding points, and blood pressure. We then compared these parameters statistically in both groups using Mann-Whitney's U test. The incidence of epistaxis in inpatients was statistically higher in winter than in any other season, and most had uncontrolled borderline hypertension. We concluded that borderline hypertension worsens in winter and that patients with borderline hypertension should be medicated to prevent severe epistaxis.