The only study that I can find that measures the effect of class of
travel on the chance of getting a DVT is this on (all the other
articles seem to refer back to it):
S Afr Med J. 2003 Jul;93(7):522-8.
The BEST study--a prospective study to compare business class versus
economy class air travel as a cause of thrombosis.
"
Only 434 subjects had a full venous duplex scan performed. None had
ultrasonic evidence of venous thrombosis. Nine passengers tested at
departure had elevated D-dimer levels and these volunteers were
excluded from further study. Seventy-four of the 899 passengers had
raised D-dimers on arrival. Twenty-two of 180 business class
passengers (12%%) developed elevated D-dimers compared with 52 of 719
economy class passengers (7%%). There was no significant association
between elevation of D-dimers and the class flown (odds ratio (OR)
0.61, p = 0.109).
"
I'd imagine that a huge amount of money, potentially, rests on this
evidence, so I'm surprised that this is the only study. I haven't got
Dr Jacobson's e-mail address at Wits, nor the whole text of the study ...

Peter Brooks wrote:

Hmmm.. perhaps all those pre-flight drinks in business and first class
have a bit of blood thinning affect :)

Just in case, I try to take an aspirin before flying anymore. Sardine
class being what it is, y'know?

In article <69vupiF35uatfU1@mid.individual.net>,
Goomba comcast.net> wrote:

Results of the BEST study show no class-related effect. In fact, on
one possible risk factor (D-dimer) business class was more likely to
show raised levels

You would think it would cause dehydration.

Get up every couple hours and walk around. Drink fluids (and not
alcoholic beverages). Flex your legs often. Aspirin has been found
useful and not useful depending on the study. Probably put it in...

On May 26, 5:08 pm, Kurt Ullman yahoo.com> wrote: