brava said...
Last surgeon stated the Number Needed to Treat is 4 men to save 1 life. I am a little confused. I was too much in shock to ask sensible follow-up questions. My interpretation is that 4 men must go through RP in order for one to receive a benefit. In other words, it does little to benefit the other three.
No, that number—the number needed to be diagnosed and treated—which the last surgeon gave you is not correct.
The European Randomized Study of Screening for Prostate Cancer (ERSPC) is an on-going study which reports on the latest result of both the number needed to be invited (to be PSA tested) and the number needed to be diagnosed (and treated) to save one life.
ERSPC reports updates every several years, and over time the numbers (based on the nature of the study) decline over time and will eventually plateau out. After 13 years, the numbers are still going down but at a slowing rate.
According to their most recent update in October 2014, a total of 781 men needed to be invited to screening (“NNI”=number needed to invite) and
27 to be diagnosed and treated (“NND”=number needed to diagnose, and the study's assumption is that all diagnosed are treated) with prostate cancer to avert one death from the disease. Next update, that number will go down again. Some models have been created to predict the leveling-out point which I've read are in the 4-5 range. This might be what the doctor is talking about
, but is talking about
a projection not the current value.
http://www.erspc.org/
http://prostatecancerinfolink.net/2014/08/07/erspc-mortality-data-at-13-years-of-follow-up-published/
Post Edited (JackH) : 3/10/2016 2:34:46 PM (GMT-7)