Question

A. During 1977, in a city of 212,000 population, a total of 1,900 persons died during the year, four (4) of the deaths were from disease "a". 1. What was the crude death rate per 1,000 population? 8.96 per 1,000 2. What was the cause-specific death rate per 100,000? 1.89 per 100,000 B. During the same period, a total of 412 cases of measles were reported in the same city 1. What was the incidence rate per 100,000 population in the city during the specified period? 194.34 per 100,000 C. It was also known that 19 of the cases were males under 10 years of age. At that time, the male population under 10 years of age was 19,080 1. What was the age-specific incidence rate during that year in the city? D. An outbreak involved 26 cases of disease "x", 7 were female, 19 were males The total number of persons of each sex in the affected group was unknown (See Table below) Sex # of Cases # of Persons (in group) Male Female Total 19 7 26 87 96 2. What was the attack rate among members of each sex & attack rate among the entire group?

Answer 1

c). age specifci incidence rate=no of deaths in the age group / total person year at risk in the age group=

= $\frac{19}{19080}*100000$

=99.58 per 100000 in that year

d).attack rate(%) in male=no of cases/total male=(19/87)*100=21.84

attack rate(%) in female=no of cases/total female=(7/9)*100=77.78

attack rate(%) among entire group=(26/96)*100=27.08