3 ms·
in that case they wouldn't really test whether it works or not..
by askmike 10y ago
in that case they wouldn't really test whether it works or not..
- tveita 10y agoIt's supposed to lower sperm count, which you could easily verify with a sample.
- sangnoir 10y agoI don't think they were measuring the efficacy on the basis of whether or not the participants conceived - that measure is affected by too many variables. Sperm count is the more reliable metric with reasonable granularity for measuring the effect.