3 ms·
One should not leave out the important part "pilot study". As said by the authors in the conclusions themselves, it still requires a larger one to give definite
by yokaze 6y ago
One should not leave out the important part "pilot study". As said by the authors in the conclusions themselves, it still requires a larger one to give definite answer.
- cameldrv 6y agoI agree that a larger N would be preferable, but the effect size was enormous, and so the P value was <.001. Therefore, IMO, it's very likely that Vitamin D has a causal effect. Given that Vitamin D has at least some causal effect, it's much more likely that the observational studies that show a correlation are due to causation.