a and b are muti choice, c is a caculation a. The rates used as an external or s

Question

a and b are muti choice, c is a caculation

a. The rates used as an external or standard population in their calculation are (Select one):
i. directly standardised rates
ii. indirectly standardised rates
iii. prevalence rates

b. Sub-area rates within a study area may be compared using(Select one):
i. directly standardised rates
ii. indirectly standardised rates

c. In a study there were 28 males and 47 females newly diagnosed with cancer over the course of one year. There was a total of 2100 males and 2398 females registered at the midpoint in the year of the study.

What are the stratum specific rates per 100?

What is the crude rate per 100?

Explanation / Answer

c)

28 males out of 2100 males is = 28/2100 = 0.0133

47 females out of 2398 females = 47/2398 = 0.0195

now the crude rate includes both males and females

(28+47)/(2100+2398) = 0.0166

No backgrond information for a and b are provided

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