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Incidence in the exposed: Ie = a/(a+b)* 100 =le = 23/(23+779)*100
= 23/802*100
= 0.028678*100
= 2.87
= means 2.87 per 100
Incidence in the unexposed: Iu = c/(c+d) * 100 =
lu = 82/(82+1549)*100
= 82/1631*100
= 0.0502759*100
= 5.02
= means 5.02 per 100...
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