Nokea
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.
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Which surveillance can watch for disease before patient seeks care?
- A. Surveillance based on a specific case definition for a disease(e.g., listeriosis).
- B. Syndromic surveillance based on symptoms, signs, or other characteristics of a disease.
- C. Both.
- D. Neither.
Correct Answer: B
Rationale: Syndromic surveillance detects outbreaks based on early symptoms reported even before patients seek medical care.
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).
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.
Which of the following is unrelated to the chi square test of significance?
- A. Degree of freedom
- B. Life table
- C. Significance level
- D. Qualitative data
Correct Answer: B
Rationale: Life tables are not directly related to chi-square tests, which assess qualitative data associations.
A case definition during an outbreak investigation should specify:
- A. Clinical features
- B. Time
- C. Place
- D. Person
Correct Answer: A
Rationale: A good case definition includes clinical criteria and details on time, place, and person to ensure consistent identification of cases.