Figure 3From: Vasectomy by ligation and excision, with or without fascial interposition: a randomized controlled trial [ISRCTN77781689] Cumulative event probabilities by treatment group Thin line, no-scalpel vasectomy with fascial interposition. Thick line, no-scalpel vasectomy without fascial interposition. 3.A: Time to success as defined by azoospermia. 3.B: Time to success as defined by severe oligozoospermia, <100,000 sperm/mL.Back to article page