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7 Person time A sample of 100 healthy men was followed for the development of...

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7 Person time A sample of 100 healthy men was followed for the development of prostate cancer They were followed for different amounts of time 20 men were followed for 5 years and then developed prostate cancer 10 men were followed for 1 year and then were lost to follow up The remaining men were followed for 10 years and never developed prostate cancer Calculate the number of person years of observation accrued by this population 8 The incidence rate of a non fatal disease is 400 100 000 person years People usually have the disease for an average of 3 years at which time the disease resolves spontaneously Think about which pieces of information you have about this disease and any equations we might have learned that link these pieces of information hint see

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