Vic’s Note: Stating that you got robust results with 13 people in the sample size and especially stating that you got 93% efficacy in treatment is misleading when all you’ve done is find 13/14 patients were good.
I’m hard pressed to believe that anybody with a stats background would be willing to say that those kinds of results should be generally applicable to the general populace.
On the Shapiro and Silber study in 1979: “Unfortunately, long-term follow-up was not part of the study; however, the authors interpreted the results to conclude that sperm granulomas are entirely benign and their formation should be encouraged through the use of open- ended vasectomy to reduce the risk of PVPS. Another study by Moss (1992) helped confirm Shapiro and Silber’s conclusions. In this study, rates of PVPS were compared in 3081 patients with closed-ended vasectomy and 3139 patients with open-ended vasectomy. This study demonstrated that 6% of the patients with closed-ended vasectomy developed PVPS, whereas only 2% of patients with open-ended vasectomy did.
Aetna considers the implantable vas deferens ligation clip (Vasclip, VMBC, LLC, Roseville, MN) experimental and investigational for ligation of the vas deferens for male sterilization because there is insufficient evidence in the peer-reviewed literature that the Vasclip procedure provides clinically significant benefits over standard vasectomy procedures.