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Daily number of cigarettes smoked Deaths from lung cancer Person- years at risk Mortality rate per 1000 person-years Rate Ratio Rate difference per 1000 person-years 0 3 42,800 0.07 referent referent 1-14 22 38,600 15-24 54 38.900 25+ 57 25,100 All smokers 133 102,600 Total 136 145,400 Question 18: Compute lung cancer mortality rates, rate ratios, and rate differences for each smoking category
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Liu Q, Zhao M, Chen W, Xu K, Huang F, Qu J, et al
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