What is the risk ratio for the association between continued smoking and second heart attack? Round to two decimal places

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A group of 156 heart attack patients who were regular smokers up to the time of their heart attacks were followed for ten years. Among them, 75 patients continued to smoke after their heart attacks and 81 quit after their heart attacks.  Of the 75 patients that continued smoking, 27 had a second heart attack during the ten years of follow-up, and of the patients who quit, 14 had a second heart attack during the 10 years of follow-up. 

 

What is the risk ratio for the association between continued smoking and second heart attack? Round to two decimal places

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