"When all 14 studies were pooled, no statistically significant results emerged. However, when the studies were divided according to whether vitamin D3 was taken daily in a low dose* or in higher doses administered at longer intervals*, a large difference was seen."
This sounds fishy. Sounds like their primary result was nothing, and then they looked for something else. Would require some checking if they had a preregistration, if this was registered as a secondary resuld and if they had done a proper statistica analysis of multiple outocmes.
This sounds fishy. Sounds like their primary result was nothing, and then they looked for something else. Would require some checking if they had a preregistration, if this was registered as a secondary resuld and if they had done a proper statistica analysis of multiple outocmes.