Epidemiology of prostatitis in Finnish men: a population-based cross-sectional study

Objective To study the lifetime occurrence of prostatitis in Finnish men an d their exposure to the disease. Subjects and methods A population-based cross-sectional survey was conducte d in the two most northerly provinces of Finland (Oulu and Lapland). Altoge ther, 2500 male residents aged 20-59 years were chosen at random to complet e a questionnaire on prostatitis. The data were collected between June 1996 and October 1997. Replies were received from 1832 men, giving a response r ate of 75%. Results The overall lifetime prevalence of prostatitis was 14.2%. The risk of having or having had prostatitis increased with age, being 1.7 times gre ater in men aged 40-49 years than in those aged 20-39 years, and 3.1 times greater in those aged 50-59 years. The overall incidence was 37.8/10 000 pe rson years. More than a quarter of the 261 men who had or had had prostatit is symptoms (27%) suffered from them at least once a year, while 16% suffer ed from persistent symptoms; 63% of the men with prostatitis had their wors t symptoms during the winter (November-March). Neither education nor profes sion had much influence on the occurrence of prostatitis, but divorced and single men had a lower risk than married men. Most patients felt they had n ot received enough information about the disease at their first visit to a general practitioner. Conclusions The results of this survey showed that the occurrence of prosta titis symptoms in men living in northern Finland is higher than that report ed in other parts of the world. This could be partly caused by the cold cli mate.