QUESTION 2 1. Consider a group of 1,000 newborn infants. 100 infants were born w

Question

QUESTION 2 1. Consider a group of 1,000 newborn infants. 100 infants were born with serious birth defects and 20 of these 100 died during the first year of life. 90 of the 900 remaining infants without any birth defects also died during the first year of life. · Calculate the prevalence of serious defects in this population at the time of birth. · Calculate the overall cumulative incidence of mortality in this population. · Calculate the cumulative incidence difference in mortality between infants born with serious birth defects and without. · State in words your interpretation of the cumulative incidence difference calculated in part c.

Explanation / Answer

Calculate the prevalence of serious defects in this population at the time of birth. = 100/ 1000 * 100 = 10%

Calculate the overall cumulative incidence of mortality in this population. = (90 + 20)/ 1000 * 100 = 11%

Calculate the cumulative incidence difference in mortality between infants born with serious birth defects and without.

Cumulative incidence of martality of infants born with serious birth defects = (20/100 ) * 100 = 20%

Cumulative incidence of martality of infants born without serious birth defects = (90/900) * 100 = 10%

so difference = 20 - 10 = 10%

here we can see that there is more chances of pre-mauture death in serious defects boys.

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