On March 4 1999 The New England Journal Of Medicine Published A Research Article By Dr Douglas Jorenby And Colleagues 1 (45.29 KiB) Viewed 21 times
On March 4 1999 The New England Journal Of Medicine Published A Research Article By Dr Douglas Jorenby And Colleagues 2 (45.29 KiB) Viewed 21 times
On March 4, 1999, the New England Journal of Medicine published a research article by Dr. Douglas Jorenby and colleagues comparing different treatments to help patients stop smoking. The four treatments were: a placebo, a nicotine patch, Zyban, and both Zyban and a nicotine patch. The subjects were treated and the number of subjects not smoking after 6 months was recorded. The results are summarized in the table below: Treatment Subjects participating Subjects not smoking After Six Months 30 52 85 95 Placebo Nicotine Patch Zyban 244 Zyban and nicotine patch 245 160 244 1. Compute the sample proportion of successes for each group. Rank the four treatments in order of effectiveness (most effective to least effective). (5 pts.) 2. Calculate the 95% confidence interval for: a. The proportion of patients using Zyban who were not smoking 6 months later. Show all work. Round to 4 decimal places. (11 pts.) b. The proportion of patients using Zyban and a nicotine patch who were not smoking 6 months later. Show all work. Round to 4 decimal places. (11 pts.)
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