Benign prostatic hyperplasia in elderly Thai men in an urban community: the prevalence, natural history and health related behavior.

Problem: Although benign prostatic hyperplasia (BPH) is a common disease in elderly Thai men the prevalence in the community and its natural history is unknown.

Objectives: To determine the prevalence of symptomatic BPH and its natural history. To determine the health related behaviors which have an impact on the voiding symptoms.