Meta Analysis facts

While investigating facts about Meta Analysis Study and Meta Analysis Meaning, I found out little known, but curios details like:

A meta analysis of 21 separate studies spanning as many as 23 years and testing 347,000 people concluded there is no significant evidence that consumption of saturated fat has any relationship to coronary heart disease or cardiovascular disease.

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A 2007 meta-analysis study of Chiropractic concluded that its concepts are not based on solid science and that its therapeutic value has not been demonstrated beyond reasonable doubt.

What meta analysis means?

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what meta-analysis in psychology. Here are 9 of the best facts about Meta Analysis Definition and Meta Analysis Vs Systematic Review I managed to collect.

what's meta analysis?

1. A meta-analysis of 41 double-blind, placebo-controlled studies concluded that nicotine or smoking had significant positive effects on aspects of fine motor abilities, alerting and orienting attention, and episodic and working memory.

2. The antihypertensive (blood pressure lowering) effects of cocoa were measured, in a meta-analysis of multiple studies, to be as potent as actual prescription blood pressure medicines (see "Antihypertensive Effects" section, 3rd paragraph from the end).

3. Several meta-analysis showed that beauty is objective and attractive people are judged better.

4. A meta analysis of economic data found that Immigration does not actually largely impact wages.

5. Professor John Hattie, who conducted the largest meta-analysis study of teaching techniques to date, and found that the three biggest predictors of student success are, in order, teacher feedback, student's prior cognitive ability, and student perception of teacher's teaching ability.

6. A meta analysis of 14.5 million twins across 50 years of study found that of 17,8000 traits, 49% of variance was attributable to genetics. The exact level of influence varied from trait to trait (e.g. 77% for schizophrenia, 30% for social values), but all studied traits had some genetic element.

7. Because I have a cold: "If you take Zinc acetate lozenges in daily doses of over 75 mg within 24 h of common cold symptoms, a meta-analysis of 13 placebo-controlled trials suggests your cold will be 42% shorter in duration."

Meta Analysis data charts

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