Re: Delayed Treatments for Prostate Cancer
- From: "george conklin" <george@xxxxxxx>
- Date: Thu, 24 Aug 2006 12:12:11 GMT
"Skeptic" <bcs002b@xxxxxxxxx> wrote in message
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"george conklin" <george@xxxxxxx> wrote in message
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"Skeptic" <bcs002b@xxxxxxxxx> wrote in message
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"george conklin" <george@xxxxxxx> wrote in message
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The issue is to what degree surgery, by any technique, is going to do
much for a patient. You point to a 3% difference over 10 years as a
major victory, even while the big studies, much delayed, are just
getting started. One has been going 10 years with no results announced
yet.
NEJM V347(11) from Sept 2002:
studied 700 men with prostate cancer. Median f/u of 6 years (not
adequate for prostate cancer studies) showed an improved disease
specific survival - a decrease from 8.9% to 4.6% which is a 48%
reduction.
So, go tell government to get rid of the PIVOT studies since
everything has been decided. 700 men? And from that pitifully small
number you are going to treat millions? Horrid.
We have the studies that we have. It's not easy to RANDOMIZE men to
treatment vs. no treatment. Only time will tell what PIVOT shows.
NEJM V352(19) from May 2005
Same group with longer followup, now out to 8 years (still not
adequate). Showed that "radical prostatectomy reduces disease specific
mortality, overall mortality, and the risks of metastasis and local
progresssion". Overall survival was improved by 22%. Not 3%...... but
22%. That was statistically and is clinically significant.
3% of a sample turns into 22% 'reduction.' A committee had to decide
what the men really died of, since there were multiple causes. Just a
few differences in committee opinion would have changed the result since
you are dealing with a small sample. You know that too, but you cannot
fool the whole world with nasty posts. I still view you as once reason
why research into female cancers is so advanced compared to men. Neither
is all that good, but women have been politically active against
attitudes like yours.
22% improvement in survival. Bitch all you want - that's what the data
shows - a 22% improvement in survival after just 8 years of followup.
Look you continually fail to realize you cannot construct life tables
with disease-specific mortality with a sample of 700 and expect stable
results. 22% is based on only 3% of the sample, with a committee having to
decide who died of what, since it was often unclear. Politics is obviously
involved too. It is pitiful that treatment procedures for millions are
based on as few as 20-25 possible deaths in a sample of 700. You may like
the results, but it is a scandal that never ceases to amaze me. At the
individual level, would you tell a patient that he had a 3% chance in 10
years of having a better outcome of doing nothing? I doubt it. You want
the income first, the faith second, and your belief system is in always
doing something. Others might not make that choice, but as the article on
overtreatment showed, the cultural norms are always to do something, even if
it won't help. The system is set up for that, and it is reinforced by the
culture. You are a good example of faith-based outcomes.
.
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