17. In the video, Dr. Lara discusses the results of a meta-analysis published in 2013 by Harri Hemila and Elizabeth Chalker in the Cochrane Database of Systematic Reviews. (You can click on the link below to see the meta-analysis for yourself. Page 4 provides a user-friendly, plain-language summary of the results.) Vitamin C for Preventing and Treating the Common ColdDownload Vitamin C for Preventing and Treating the Common Cold A meta-analysis is a statistical examination of data from multiple scientific studies about the same topic in order to determine overall trends. This figure (which will appear in the 7th edition of our textbook) illustrates the hierarchy of scientific evidence. The weakest types of evidence are shown at the bottom of the hierarchy and the strongest types of evidence are shown at the top of the hierarchy: When we make a nutrition recommendation, we want to make sure it is based on the most up-to-date scientific evidence. Expert opinions and observational studies are informative and useful, but we really need evidence from multiple controlled experiments to support nutrition recommendations. When the results of observational studies and many experiments tell us a consistent story about how dietary factors can impact health outcomes, then we can be confident in making evidence-based nutrition recommendations. What was the conclusion of the meta-analysis of vitamin C for preventing and treating the common cold among the general population? Group of answer choices 1. Taking vitamin C supplements may modestly reduce the duration of the common cold, but it does not prevent the common cold. 2. Vitamin C supplements are effective for preventing the common cold. 3. Vitamin C supplements increase the likelihood of contracting the common cold. 4. If taken at the first appearance of symptoms, vitamin C supplements can rapidly cure the common cold.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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17.

In the video, Dr. Lara discusses the results of a meta-analysis published in 2013 by Harri Hemila and Elizabeth Chalker in the Cochrane Database of Systematic Reviews. (You can click on the link below to see the meta-analysis for yourself. Page 4 provides a user-friendly, plain-language summary of the results.)

Vitamin C for Preventing and Treating the Common ColdDownload Vitamin C for Preventing and Treating the Common Cold

A meta-analysis is a statistical examination of data from multiple scientific studies about the same topic in order to determine overall trends. This figure (which will appear in the 7th edition of our textbook) illustrates the hierarchy of scientific evidence. The weakest types of evidence are shown at the bottom of the hierarchy and the strongest types of evidence are shown at the top of the hierarchy:

When we make a nutrition recommendation, we want to make sure it is based on the most up-to-date scientific evidence. Expert opinions and observational studies are informative and useful, but we really need evidence from multiple controlled experiments to support nutrition recommendations. When the results of observational studies and many experiments tell us a consistent story about how dietary factors can impact health outcomes, then we can be confident in making evidence-based nutrition recommendations.

What was the conclusion of the meta-analysis of vitamin C for preventing and treating the common cold among the general population?

Group of answer choices

1. Taking vitamin C supplements may modestly reduce the duration of the common cold, but it does not prevent the common cold.

2. Vitamin C supplements are effective for preventing the common cold.

3. Vitamin C supplements increase the likelihood of contracting the common cold.

4. If taken at the first appearance of symptoms, vitamin C supplements can rapidly cure the common cold.

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Trusting the Evidence
Meta-
analyses
& systematic
reviews
Randomized
controlled trials
Strongest
Cohort studies
Case-control studies
Cross-sectional studies & surveys
Case reports & case studies
Quality of evidence
Animal & in vitro studies
Editorials, expert opinion papers
Adapted from thelogicofscience.com
Weakest

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