Association between predictors of progression of benign prostatic hyperplasia and moderate-to-severe prostatitis-like symptoms: A propensity score–matched analysis

We investigated the association between moderate-to-severe prostatitis-like symptoms and the predictors of benign prostatic hyperplasia (BPH) progression. Men who underwent health checkups were analyzed. We classified symptoms as “moderate to severe” if the pain score according to the National Institutes of Health-Chronic Prostatitis Symptoms Index was ≥8 and predictors of the progression of BPH were defined as having a prostate-specific antigen (PSA) ≥1.6 ng/mL, total prostate volume (TPV) ≥31 mL, international prostate symptom score (IPSS) ≥20, and maximal flow rate (Qmax)