… a threshold of baseline 25‐hydroxyvitamin D (25OHD; 30 nmol/L) … women in late winter and
randomized them to receive placebo, … In the present analysis, when the trial participants were …

… Mendelian randomization (MR). We provide a systematic review of 31 MR studies concerning
25-hydroxyvitamin … MR analyses were conducted almost exclusively in European-ancestry …

… The study was a randomized controlled trial in 782 children and adults (4–60 y old) recruited
as 201 families. Families were randomly assigned to vitamin D–fortified or nonfortified milk …

… This systematic review of randomized controlled trials (RCTs) evaluated the effects of oral
vitamin D supplementation on serum 25(OH)D concentrations and physical performance in …

… Our meta-analysis of prospective observational studies allows an evaluation of the dose–…
of 25(OH)-vitamin D levels, which will not only complement findings from ongoing randomized …

… In the causal Mendelian randomization analysis an IV approach was used with the genetic
score (G) as an instrumental variable and a determinant of 25(OH)D as the exposure (X). The …

… For the analysis 25-OHD measurements were standardized to remove the prominent effect
of the month when blood was taken on the 25-OHD concentration, as described in detail in …

… for assessing low 25-hydroxyvitamin D … 25hydroxyvitamin D concentrations are associated
with increased risk of osteoporotic fractures, using a Mendelian randomization analysis. For …

… very low 25-hydroxyvitamin D (25(… analysis of the double-blind, randomized, placebo-controlled
Styrian Vitamin D Hypertension Trial (2011–2014) with 200 hypertensive patients with 25…

… -analysis of observational studies will augment and complement findings from randomized
… Although randomized trials are critical for establishing cause-and-effect relationships …