Pages tagged with "Observation"

29 pages, most important first (overviews, then meta-analyses, then RCTs, then newest). Combine with another topic

• Concise summary of 10 Vitamin D and COVID-19 observations
• Severe rather than mild Heart Failure 3.4X more likely if low Vitamin D
• Observational evidence, not RCTs, is the right test for a nutrient like vitamin D - review
• Vitamin D-disease associations vary with the type of study – RCT, Observational, MR
• COVID fought by Vitamin D: OBSERVATIONS: YES, RCTs: NO
• Long COVID was 4X less common in those on 1,000 IU of vitamin D for 3+ years - observational
• Autism in US preschoolers more than doubled between 2019 and 2024 - parent observation
• Parkinson's patients were twice as likely to be Vitamin D deficient, and get less midday sun
• Immune cell profile improves around 38–41 ng/mL of Vitamin D - observation of 316 healthy adults
• Hill's Criteria is especially good at identifying causal relationships to problems
• More sun-protection habits = less Vitamin D in Chinese students (dose-response) - observational
• 1 in 5 US children ages 3-11 are obese - and their vitamin D is lower - observational
• Mild cognitive impairment: = 94% if 8 ng of Vitamin D, 20% if 30 ng - observation (same day)
• Late sepsis deaths ~1.7X more likely if vitamin D below 12 ng - need-for-speed
• Microplastics accumulate in all human bile, nearly 4X higher in gallstone patients - observational
• 4 observation studies: more Ultra-processed food, more Multiple Sclerosis
• Vitamin D data - Why observation is preferred to clinical trial - Grant Oct 2025
• Comparing Vitamin D Randomized controlled Trials and Observational studies
• T1 Diabetes reduction by high Omega-3 and Vitamin D – GRH ongoing observation
• Observations that Vitamin D, Zinc, and Selenium separately reduce COVID-19
• Cancer patients need more vitamin D, even those who are supplementing – observational study
• 2.8 X fewer COVID-19 nursing home deaths if add 10,000 IU Vitamin D daily for a week (small observation)
• Hospital COVID-19 observation: 7X more likely to live if more than 20 ng of vitamin D
• COVID-19 male mortality increased 3.9 X if low vitamin D – observation
• Vitamin D and COVID-19 - observational studies found it helps, never hurts - Campbell
• Vitamin D deficiency in pediatric critical illness: Time to move on from observational studies
• Off topic: For proof: Random Controlled and Observational Trials should agree
• Can Observational Studies be as good as Random Controlled Trials for Vitamin D
• Fracture healed faster with 20,000 IU on a base of 8,000 IU – Individual observation