Homework Sourse18 In the investigation of an epidemic of food poisoning at
18. In the investigation of an epidemic of food poisoning at a banquet, high attack rates were found for people who ate roast beef as well as those who ate mush room sauce. Table 1 shows combinations of the two foods that were then considered. Calculate appropriate Attack Rates. (4 points)
Table 1. Attack Rates for Food Combinations
Ate mushroom sauce
Did not eat mushroom sauce
Number
Number Ill
Attack Rate (%)
Number
Number Ill
Attack Rate (%)
Ate roast beef
150
105
72
2
Did not eat roast beef
42
33
26
0
19. Based on the data presented above, the infective item is most likely to be:
A. roast beef
B. mushroom sauce
C. neither roast beef nor mushroom sauce. (1 point)
Use the following data to answer questions 20 through 23. (1 point each; total = 4 points)
During 2014, in a small city of 1,000,000, there were 10,000 deaths from all causes. The Cancer Surveillance System recorded a total of 3,000 cancer cases in the small city during 2014. Among the diagnosed and reported cancer cases (all types), 2,000 were among males and the rest (1,000) among females. It was also noted that among all the cases recorded with the Cancer Surveillance System, 600 died from cancer (with males accounting for 500 of those deaths and female the rest)
20. Crude death (mortality) rate in the city in 2014 was ________________________.
21. The proportionate death (mortality) rate in the city due to all cancers in 2014 was ________________.
22. The case fatality rate for cancer (all types) in the city in 2014 was _____________________________.
23. The cause-specific mortality (death) rate for cancer (all types) in the city in 2014 was _____________.
| Ate mushroom sauce | Did not eat mushroom sauce | |||||
| Number | Number Ill | Attack Rate (%) | Number | Number Ill | Attack Rate (%) | |
| Ate roast beef | 150 | 105 | 72 | 2 | ||
| Did not eat roast beef | 42 | 33 | 26 | 0 |
Solution
ate mushroom sauce = 42+33 = 75
ate roast beef = 72+2 = 74
19. Based on the data presented above, the infective item is most likely to be:
B. mushroom sauce
20. Crude death (mortality) rate in the city in 2014 was _____10,000 deaths___________________.
21. The proportionate death (mortality) rate in the city due to all cancers in 2014 was ______3,000__________.
22. The case fatality rate for cancer (all types) in the city in 2014 was ___________600 died from cancer__________________.
23. The cause-specific mortality (death) rate for cancer (all types) in the city in 2014 was _____________.
For 23 there is not information
