John Snow located source of
- A. cholera
- B. typhoid
- C. plague
- D. All
Correct Answer: A
Rationale: John Snow is famous for identifying the source of a cholera outbreak in London.
You may also like to solve these questions
Arrange a field visit to a health-related agency that is located in your community. An example might be a public health department, nonprofit health-related organization, or research institute. Find out about how epidemiologists contribute to these settings.
- A. Field visits reveal hands-on contributions of epidemiologists to public health initiatives.
- B. Visits are purely recreational.
- C. Agencies do not employ epidemiologists.
- D. Such visits offer no educational benefit.
Correct Answer: A
Rationale: Field visits expose students to applied epidemiology, demonstrating how professionals address public health challenges in real-world contexts.
The common characteristic that both experimental and quasi-experimental study should possess is
- A. Manipulation
- B. Control groups
- C. Randomization
- D. None
Correct Answer: A
Rationale: Both experimental and quasi-experimental studies involve manipulation of variables.
30 babies were born in hospital, 10 were less than 2.5 kg and 20 were greater than 2.5 kg the average is
- A. Arithmetic mean
- B. Median
- C. Geometric mean
- D. Mode
Correct Answer: B
Rationale: The median divides the data into two equal parts, making it suitable here.
The geometric mean is the value that:
- A. Is midway between the lowest and highest value on a log scale
- B. Occurs most often on a log scale
- C. Has half the observations below it and half above it on a log scale
- D. Is statistically closest to all of the values in the distribution on a log scale
Correct Answer: A
Rationale: Geometric mean finds the central tendency for a set of numbers by using the product of their values.
Aflatoxin causes,
- A. neurolathyrism
- B. hepatoma
- C. cholengio carcinoma
- D. botulism
Correct Answer: B
Rationale: Aflatoxins are carcinogenic compounds that primarily cause liver cancer (hepatoma).