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Revision class 1. Thomas Abraham . Hazard ratio: compares events in one group, with those in another group Deaths among those who eat more red meat, compared to deaths among those who eat less red meat

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Revision class 1

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  1. Revision class 1 Thomas Abraham

  2. Hazard ratio: compares events in one group, with those in another group • Deaths among those who eat more red meat, compared to deaths among those who eat less red meat • Hazard ratios and relative risk ratios, can be read similarly, though they are technically different

  3. Understanding risk figures • By eating more red meat, I increase my risk of death from cancer and CVD by 20% • But even if I do not eat red meat, I still have a risk of getting cancer (absolute risk).

  4. At my age, I have a 10% chance of developing cancer or cvd ( absolute or baseline risk) • If I eat a lot of red meat, I increase this by 20%. (Relative risk increase) • Absolute risk increase 10%+ 2%(20% of 10)= 12% • I still have an 88% chance of not developing cancer/cvd

  5. How to report? • Ask for absolute risk reduction figures, or baseline risk figures.. • They help readers get a much better understanding of how big the risk is and how important the findings are.

  6. http://www.healthnewsreview.org/toolkit/tips-for-understanding-studies/absolute-vs-relative-risk/http://www.healthnewsreview.org/toolkit/tips-for-understanding-studies/absolute-vs-relative-risk/ • http://www.scidev.net/en/practical-guides/communicating-statistics-and-risk.html

  7. http://abcnews.go.com/Health/w_DietAndFitness/red-meat-tied-increased-mortality-risk/story?id=15901365#.T4OtB1E_9Dshttp://abcnews.go.com/Health/w_DietAndFitness/red-meat-tied-increased-mortality-risk/story?id=15901365#.T4OtB1E_9Ds • http://www.cbc.ca/news/health/story/2012/03/13/video-red-meat-risk.html • http://www.latimes.com/health/la-he-red-meat.eps-20120312,0,6280900.graphic • http://www.bbc.co.uk/news/health-17345967

  8. http://www.youtube.com/verify_age?next_url=/watch%3Fv%3D1duI_ycUORkhttp://www.youtube.com/verify_age?next_url=/watch%3Fv%3D1duI_ycUORk

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