27% Rate of major depression in women who have attended religious services since childhood.
36% Rate in women who had changed attendance patterns (nearly all had stopped attending services).
31% Incidence of major depression in men who have always attended religious services.
24% Incidence in men who had stopped attending.
25% High school biology teachers who say they devoted at least one or two classroom hours to creationism or intelligent design.
48% Of these, teachers who "emphasize that this is a valid, scientific alternative to Darwinian explanations for the origin of species."
(Source: PLoS Biology)
The depression study, "Religious activity and lifetime prevalence of psychiatric disorder," is available online. Temple University issued a press release about its findings.