- 9 Childhood Obesity The National Health And Nutrition Examination Survey Nhanes Weighed A Sample Of 546 Boys Aged 6 1 (42.46 KiB) Viewed 24 times
- 9 Childhood Obesity The National Health And Nutrition Examination Survey Nhanes Weighed A Sample Of 546 Boys Aged 6 2 (35.3 KiB) Viewed 24 times
- 9 Childhood Obesity The National Health And Nutrition Examination Survey Nhanes Weighed A Sample Of 546 Boys Aged 6 3 (52.34 KiB) Viewed 24 times
11. Preventing heart attacks: Medical researchers performed a comparison of two drugs, clopidogrel and ticagrelor, which are designed to reduce the risk of heart attack or stroke in coronary patients. A total of 6676 patients were given clopidogrel, and 6732 were given ticagrelor. Of the clopidogrel patients, 668 suffered a heart attack or stroke within one year, and of the ticagrelor patients, 569 suffered a heart attack or stroke. Can you conclude that the proportion of patients suffering a heart attack or stroke is less for ticagrelor? Use the a = 0.01 level. Source: Lancet 375:283-293
13. Treating circulatory disease: Angioplasty is a medical procedure in which an obstructed blood vessel is widened. In some cases, a wire mesh tube, called a stent, is placed in the vessel to help it remain open. A study was conducted to d compare the effectiveness of a bare metal stent with one that has been coated with a drug designed to prevent reblocking of the vessel. A total of 5320 patients received bare metal stents, and of these, 841 needed treatment for reblocking within a year. A total of 1120 received drug-coated stents, and 134 of them required treatment within a year. Can you conclude that the proportion of patients who needed retreatment is less for those who received drug-coated stents? Use the a = 0.05 level. 20.0 OVO Source: Canadian Medical Association Journal 180:167-174