F
On Aug 23, 3:03 pm, "Bjorn Berg f/Fergie Berg and All the Ships at S"
<[email protected]> wrote:
> On Aug 23, 7:52 am, [email protected] wrote:
> > Helmet skeptics
> > do not say that ER statistics should not be believed. In fact, I make
> > use of such statistics regularly in these discussions. What we say is
> > that simple case-control ER studies with self-selected helmeted
> > subjects are fundamentally flawed - and that those are the type of
> > studies that helmet proponents most rely on.
>
> > Think about that. "Self-selected" means the person being studied has
> > personally chosen whether to adopt a certain intervention. And a case-
> > control study with self-selected subjects should not be accepted to
> > determine the effectiveness of any medication or other health-related
> > intervention.
>
> > Why? Because the person choosing the intervention automatically
> > proves himself to be different from those who do not choose it. That
> > person is likely to have other behavioral differences that affect the
> > results.
>
> > The classic example is post-menopausal women who choose hormone
> > replacement therapy. HRT was touted for years as a health benefit,
> > because the first women who chose to take hormones were found to have
> > less heart disease, fewer cancer deaths, etc.
>
> > But when large population, _randomized_ studies were done a few years
> > ago, researchers found that HRT was actually a significant risk,
> > causing _more_ such health problems, not fewer. The explanation?
> > Those women who were early adopters of HRT were very health
> > conscious. Their better health was caused simply by their overall
> > attention to their health - i.e. better diet, more checkups, and more
> > exercise. Probably more bike riding!
>
> WTF made you a doctor AND a shrink?
A person doesn't have to be a doctor to read and understand scientific
papers detailing errors in studies. A person has to understand
mathematics and be reasonably intelligent.
>What does gynecological science have to do with helmets?
Hormone replacement therapy isn't generally considered gynecological.
It's a general health issue for women.
Learn before you post.
- Frank Krygowski
<[email protected]> wrote:
> On Aug 23, 7:52 am, [email protected] wrote:
> > Helmet skeptics
> > do not say that ER statistics should not be believed. In fact, I make
> > use of such statistics regularly in these discussions. What we say is
> > that simple case-control ER studies with self-selected helmeted
> > subjects are fundamentally flawed - and that those are the type of
> > studies that helmet proponents most rely on.
>
> > Think about that. "Self-selected" means the person being studied has
> > personally chosen whether to adopt a certain intervention. And a case-
> > control study with self-selected subjects should not be accepted to
> > determine the effectiveness of any medication or other health-related
> > intervention.
>
> > Why? Because the person choosing the intervention automatically
> > proves himself to be different from those who do not choose it. That
> > person is likely to have other behavioral differences that affect the
> > results.
>
> > The classic example is post-menopausal women who choose hormone
> > replacement therapy. HRT was touted for years as a health benefit,
> > because the first women who chose to take hormones were found to have
> > less heart disease, fewer cancer deaths, etc.
>
> > But when large population, _randomized_ studies were done a few years
> > ago, researchers found that HRT was actually a significant risk,
> > causing _more_ such health problems, not fewer. The explanation?
> > Those women who were early adopters of HRT were very health
> > conscious. Their better health was caused simply by their overall
> > attention to their health - i.e. better diet, more checkups, and more
> > exercise. Probably more bike riding!
>
> WTF made you a doctor AND a shrink?
A person doesn't have to be a doctor to read and understand scientific
papers detailing errors in studies. A person has to understand
mathematics and be reasonably intelligent.
>What does gynecological science have to do with helmets?
Hormone replacement therapy isn't generally considered gynecological.
It's a general health issue for women.
Learn before you post.
- Frank Krygowski