>
> In biostatistical studies, either version of beta is pretty worthless.
> Generally speaking.
If I may be permitted to infer a reason:
if you have
bodyweight= -a(drug) - b(exercise) + food
Then the standardized coefficients will affect bodyweight but they
will also affect each other. They would only be useful if drug intake
was perfectly independant of exercise and food in the population.
If they are not independant but partially collinear (0.5) using linear
regression is it possible to know whether the drug is strong enough
(colloquially speaking) to recommend?
I assume that it would be impossible as a change in drug cannot be
separated from a change in exercise in the population. Ie. people are
exercising and taking the drug so it is impossible to distinguish
which one is beneficial.
I've heard of "ridge regression" will try to investigate this area
more..
will probably figure it out with time hehe..
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