Calculate the incidence rate (IR), incidence rate difference (IRD), incidence rate ratio (IRR), the attributable fraction of the exposure (AFe), and population attributable fraction (AFp) of asthma among children living in areas near industrial complexes and those who are not so and write down the practical interpretation the results for each of the four measures. In your interpretation sentences report the point estimate and its confidence interval when possible:   living in areas near industrial complexes     Yes No Total Asthma cases 150 75 225 Person-years 6500

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