Several recent double-blind trials have found that this herb has no advantage over placebo for treating colds.
This, too, is subject to simple double-blind evaluation.
Afterward, we would try some double-blind tests of their claims.
The study was a prospective, randomized, placebo-controlled, double-blind crossover trial in healthy volunteers.
Teaching pupils the rudiments of double-blind tests, clinical trial methods and general principles of factoring studies for other influences would clear these scientific confusions.
Proper experiments should be double-blind , Carnoy says, as in drug trials.
Both have been tested in double-blind trials and found to help relieve symptoms of frequent urination in mild prostate enlargement.
Initial trials looked encouraging; however, it lost its allure after double-blind trials.
I challenged him to a simple international double-blind test in which he would be asked to identify which of several flasks had been activated.
If a curative effect doesn't show up in double-blind tests, then you're mainly talking about the placebo effect, in any case.