The more interesting finding is that people with low baseline Vitamin D levels (<25 nmol/L) did not show any improvement. Odds ratio of 0.98 (0.80–1.20).
A lot of previous Vitamin D research was dismissed with the claim that Vitamin D would be more effective if you only looked at people with low baseline Vitamin D status. This paper does not show that to be true.
A lot of previous Vitamin D research was dismissed with the claim that Vitamin D would be more effective if you only looked at people with low baseline Vitamin D status. This paper does not show that to be true.