A CROSS-SECTIONAL STUDY OF VASECTOMY, TIME SINCE VASECTOMY AND PROSTATE-CANCER

Past studies of the association of vasectomy and prostate cancer have reported inconsistent results. Our objective was to investigate whethe r vasectomy and time since vasectomy are associated with a higher risk of prostate cancer. We conducted a cross-sectional study on unduplica ted records of > 95 000 participants in a longitudinal study (1993-199 5) of prostate cancer screening conducted during Prostate Cancer Aware ness Week. Vasectomy was reported by 28%, and there were 2530 biopsies . chi(2) tests and logistic regression analyses were used and found th at vasectomy and an increased length of time since vasectomy are not a ssociated with a higher risk of prostate cancer.