Prevalence of Dizziness in a Northern and a Southeastern Capital of Brazil
Introduction: Dizziness is one of the most frequently reported symptoms in clinical settings, and it is also very frequent in the community. There are scarce reports from Brazilian community-dwelling samples.
Objective: This study aims to estimate and compare the prevalence of dizziness and its characteristics in community-dwelling samples from Rio de Janeiro (RJ) and Rio Branco (AC).
Methods: A total of 312 subjects were interviewed on the central streets of Rio de Janeiro (156) and Rio Branco (156), using a specific questionnaire with direct questions on complaints of dizziness and its features.
Results: Overall 170 male and 142 female subjects, aged 16 to 85 years (median, 36 years) were included. There were no significant differences on the prevalence between the two cities, so subsequent analyses considered the combined samples. Life prevalence of dizziness was 64.4% for the whole sample, and 1-year prevalence was 21.81%. Life- and 1-year prevalence of vertigo were 32.3 and 14.7%, respectively. Recurrent episodes of vertigo were reported by 79% of the symptomatic subjects. Males were at higher risk of having dizziness complaint in the last year (odds ratio, 2.15; p = 0.013), and age had no significant effect.
Conclusion: Dizziness and vertigo were equally very frequently reported by community subjects of Rio de Janeiro and Rio Branco, Brazil.
Keywords: dizziness, prevalence, Brazil, community.