Friday, October 17,
2003 By Steven
Milloy
I could only laugh last April when I
first heard about a study claiming that a smoking ban in
Helena, Mont., cut the city’s heart attack rate by 58 percent
in six months.
A prominent op-ed in this
week’s Oct. 15 New York Times hailed the Miracle
of Helena (search) and urged readers to give it
more credit than it deserves.
Citizens of Helena voted in June 2002 to
ban smoking in all public buildings, including restaurants,
bars and casinos. Doctors at the local hospital soon
“noticed,” according to the op-ed, that heart attack
admissions had dropped.
Six months later, the ban was rescinded.
Heart attack rates allegedly then rebounded to pre-ban levels.
The bottom line is, “Secondhand smoke
kills,” according to the op-ed.
That would certainly seem to be a
reasonable interpretation -- if all you did was read and
believe the op-ed. But, of course, my inquiring mind had a few
questions to ask before coming to a “case-closed” conclusion
on the Miracle of Helena.
First, the study isn’t easy to
evaluate -- but not because it’s rocket science. There
simply is no study to evaluate.
The results were issued in typical junk
science style via a quick-and-dirty slideshow presentation at the annual meeting of
the American College of Cardiology (search). Six months later, the study still
is not available to the public.
Slick junk scientists often choose the
“science-by-press conference” mode of releasing results
because they know their immediate audience likely will not be
able to ask probing questions -- a tough thing to do when only
sketchy details are hurriedly presented to people with no
familiarity of the research conducted.
Even so, anyone paying attention at the
presentation should have picked up on the rather obvious
problem with the supposed Miracle of Helena.
Assuming the study information presented is
accurate, fewer heart attacks seem to have occurred during the
six months of the smoking ban.
But a similar short-lived dip in heart
attacks rates also occurred in Helena four years earlier in
1998. If whatever caused the 1998 dip happened again in 2002,
the Miracle of Helena is really the Mirage of Helena.
I talked to one of researchers about that
simple observation. After stumbling and stammering for an
explanation, he finally referred me to the “study’s
statistician,” Dr. Stan Glantz (search) (more on him later) -- as if
some statistical mumbo-jumbo would credibly explain why the
1998 dip in heart attack rates was just an anomaly but the
2002 dip was definitely due to the smoking ban.
Another
glaring problem is the researchers’ failure to study any pre-
or post-ban patients to medically determine the causes of the
reported heart attacks. Given all the genetic, lifestyle and
environmental factors that combine to cause heart attacks, it
is quite bogus to attribute them to secondhand smoke,
especially without examining any patients.
But why let conflicting data and
insufficient data get in the way of a politically correct
conclusion?
I’m almost surprised that anyone is still
trying to link secondhand smoke (search) with heart disease. The
University of Chicago’s Dr. John Bailar -- no friend of the
tobacco industry-- published in the March 25, 1999, New
England Journal of Medicine his quite devastating analysis of the alleged link between secondhand
smoke and heart disease.
On the other hand, I’m not surprised to see
Stan Glantz’s involvement in the Mirage of Helena.
Glantz’s colleague on the Helena study
tried to pass him off to me as “professor of statistics.” But
I know better. I’ve observed Glantz for some time. I’ve
debated him on the radio. He’s a shameless say-anything,
do-anything anti-smoking zealot.
Glantz has a Ph.D. in applied mechanics and
engineering economic systems -- whatever that is, it is not
statistics. He’s the director of the Center for
Tobacco Control Research and Education (search) at the University of
California, San Francisco. He’s funded by the federal
government to attack the tobacco industry. The National Cancer
Institute, for example, gave Glantz $600,000 to “study”
tobacco industry lobbying on the state level.
Just what kind of cancer research is that?
It’s been about six months since New York
City’s smoking ban went into effect. I asked Dr. Glantz’s
colleague if he would be studying whether the NYC smoking ban
experience confirmed or contradicted his Helena study claims.
He mumbled something about such a study
being too difficult because of all the data involved.
But I can see where anti-tobacco
researchers wouldn’t want to have too much data. It just might
clear up the smoke they’re blowing in our eyes.
Steven Milloy is the publisher of JunkScience.com, an adjunct scholar at the Cato
Institute and the author of Junk Science Judo: Self-defense Against Health
Scares and Scams (Cato Institute, 2001).
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