0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
ARTICLE |

The Effects of Polyunsaturated Fat vs Monounsaturated Fat on Plasma Lipoproteins: The Power of a Study

Mark M. Passey, MD
JAMA. 1990;264(16):2071. doi:10.1001/jama.1990.03450160039009.
Text Size: A A A
Published online

To the Editor.—  It is amazing that despite all the attempts over the past few years to increase the appropriate use of statistics in the general medical literature, you have once again published an interventional trial with negative results with no discussion whatever of the power of the study to detect a difference in the study groups.1The following statement by Dreon et al1 is simply false: "The present results in free-living men and women demonstrated that exchanging unsaturated fats within current guidelines in reduced- fat diets does not affect plasma total cholesterol or LDL [low-density lipoprotein] cholesterol levels." What is true is that the study failed to demonstrate an effect of exchanging unsaturated fats, but the authors do not discuss what the chance is that this was simply because the study groups were too small. I grant you that they did make one insufficient allusion to wide

Topics

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

First Page Preview

View Large
First page PDF preview

Figures

Tables

References

CME
Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();