title: A cross-sectional study of vasectomy, time since vasectomy and prostate cancer.
abstract: Past studies of the association of vasectomy and prostate cancer have reported inconsistent results. Our objective was to investigate whether vasectomy and time since vasectomy are associated with a higher risk of prostate cancer. We conducted a cross-sectional study on unduplicated records of >95 000 participants in a longitudinal study (1993-1995) of prostate cancer screening conducted during Prostate Cancer Awareness Week. Vasectomy was reported by 28%, and there were 2530 biopsies. (chi)(2) tests and logistic regression analyses were used and found that vasectomy and an increased length of time since vasectomy are not associated with a higher risk of prostate cancer.
authors.affiliation: Division of Urology, C319, University of Colorado Health Sciences Center, 4200, E. Ninth Avenue, Denver, Colorado, USA.
authors.forename: E P
authors.initials: EP
authors.lastname: DeAntoni
authors.forename: S
authors.initials: S
authors.lastname: Göktaş
authors.forename: J
authors.initials: J
authors.lastname: Stenner
authors.forename: C
authors.initials: C
authors.lastname: O'Donnell
authors.forename: E D
authors.initials: ED
authors.lastname: Crawford