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zavuch27 [327]
3 years ago
11

If the incidence rate of a very serious disease is 25/100,000 person-years and the prevalence of this disease in the population

is 75/100,000, what is the average survival time of individuals who contract this disease? [Assume the population is in steady state.
Health
1 answer:
allochka39001 [22]3 years ago
8 0

Answer:

Explanation:

Mathematiclly;

Prevalence of a diseases = product of disease incidence  and the average survival time.

Prevelence =   (incidence) X (average survival time.)

( 75/100,000 )=  (25/100,000) X       ????.

but 75/100,000 <u>=0.00075</u>. (Prevalence)

and<u> </u>25/100,000<u>= 0,0025.</u>  ( Incidence)

Therefore ;

AVERAGE SURVIVAL TIME = (<u>PREVALENCE / I</u>NCIDENCE    

                                                      = 0,00075/0,00025.

    AVERAGE SURVIVAL TIME        = 3 years.

Thus it took them a period of 3 years to survive from diagnosis till death.

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