Angioplasty's benefits challenged. More than 1 millionheart patients each year undergo an angioplasty. The ben-efits of an angioplasty were challenged in a study of2,287 patients (2007 Annual Conference of the AmericanCollege of Cardiology, New Orleans). All the patients hadsubstantial blockage of the arteries but were medicallystable. All were treated with medication such as aspirinand beta-blockers. However, half the patients were ran-domly assigned to get an angioplasty and half were not.After 5 years, the researchers found that 211 of the 1,145patients in the angioplasty group had subsequent heartattacks compared with 202 of 1,142 patients in the medica-tion-only group. Do you agree with the study's conclusion,"There was no significant difference in the rate of heartattacks for the two groups"? Support your answer with a95% confidence interval.

We are given with the following data, where group 1 is the Angioplasty group and group 2 is…

Answered: Angioplasty's benefits challenged. More…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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NCI Cancer Bulletin, December 2, 2008 Volume 5 / Number 24 Title of the article: After Menopause, Weight Affects Breast Cancer Rates More than Mammography Use Women who are overweight or obese after menopause face an increased risk of breast cancer, but a large prospective cohort study indicates that the frequency of mammography use and screening accuracy are not the primary explanations for higher rates of breast cancer in these women. The same is true of large, invasive breast cancer tumors and advanced stage disease; risk increases with weight, but higher rates are not explained by the frequency or accuracy of screening mammography before breast cancer was diagnosed. The study appears in the December 3 Journal of the National Cancer Institute. Dr. Karla Kerlikowske of the San Francisco Veterans Affairs Medical Center and colleagues gathered data on 287,115 postmenopausal women who were registered in the Breast Cancer Surveillance Consortium database. Reflecting a trend in the…
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