Phony Science and Public Policy

Walter Williams reports:

A serious public health threat had to be manufactured, and in 1993 the Environmental Protection Agency (EPA) stepped in to the rescue with their bogus environmental tobacco smoke (ETS) study that says secondhand tobacco smoke is a class A carcinogenic.

Why is it bogus? The EPA claimed that 3,000 Americans die annually from secondhand smoke, but there was a problem. They couldn't come up with that conclusion using the standard statistical 95 percent confidence interval. They lowered their study's confidence interval to 90 percent. That has the effect of doubling the margin of error and doubling the probability that mere chance explains those 3,000 deaths.

The Congressional Research Service (CRS) said, "Admittedly, it is unusual to return to a study after the fact, lower the required significance level, and declare its results to be supportive rather than unsupportive of the effect one's theory suggests should be present." The CRS was being kind. This kind of doctoring of research results would get a graduate student expelled from a university.

Imagine that.No word from the the anti-smoking Nazis.