Question

QUESTION 14 You are required to fill in all the missing values. A hypothetical study investigates the incidence of lung cancer in people who use e-cigarettes only. 1,308 cases and controls are recruited for the study. 231 of the people with lung cancer smoke e-cigarettes. 544 of the people without lung cancer do not smoke e-cigarettes. A total of 754 people in this study have smoked e-cigarettes. Fill in the blanks in the table and then the blanks that follow. Lung Cancer NO Lung Cancer Total E- cigarettes No e- cigarettes Total 1. What is the incidence of exposure? (round to 2 decimal places) 2. What is the relative risk in this study? (round to 2 decimal places) 3. Is this a positive or negative association? 4. Would you say that e-cigarettes reduce the risk of cancer? Yes or no? QUESTION 15

Answer 1

Total cates and Centiels1,308 Numbe 23 Numbe eciga etto me- e-Cigaiette i754- 231 54-23 i 523 754 o e-Cgalitles54-544 544 1308-154 Total 554 281 +10 241 523+544 061 13 08 = 754-231 = 523 1308-75 mumbee = 554 CanCes 231 a. 523 754 44 CI e-Ggaseleg 55 4 l o Total

754 a+ b O.3 0o6 3 2. nvGi donce o men c+ d 554ご0.0 1805 Relatine (C+ d) 23/X554 a _ a+ b 754 X I o =116.97 asseciation tinny .rnoe likelg to duelo卜 'lary Concep tho n Peo