Nokea
Identify the type of study design described: The physical examination records of the incoming first-year class of 1935 at the University of Minnesota are examined in 1980 to see whether the freshmen's recorded height and weight at the time of admission to the university were related to their chance of developing coronary heart disease by 1981.
- A. Cohort study
- B. Case-control study
- C. Cross-sectional study
- D. Ecological study
Correct Answer: A
Rationale: This retrospective analysis constitutes a cohort study linking baseline characteristics to future outcomes.
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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).
A random-digit dialed survey conducted in the City of Long Beach, California, reported that a greater proportion of nonsmokers endorsed a ban on smoking in alcohol-serving establishments than did smokers. What type of study design was this?
- A. Cross-sectional study
- B. Case-control study
- C. Ecologic study
- D. Cohort study
Correct Answer: A
Rationale: This is a cross-sectional study as it captures attitudes at one point in time without follow-up.
How would the clinical and epidemiologic descriptions of a disease differ, and how would they be similar?
- A. Clinical focuses on individual cases; epidemiologic focuses on populations.
- B. Clinical uses laboratory tests; epidemiologic uses surveys.
- C. Clinical focuses on treatment; epidemiologic focuses on prevention.
- D. Both focus on identifying disease causes.
Correct Answer: A
Rationale: Clinical descriptions emphasize individual diagnosis and treatment, while epidemiologic descriptions analyze patterns and causes in populations.
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.
For collection of hazardous waste, color of bin is
- A. black
- B. yellow
- C. red
- D. green
Correct Answer: B
Rationale: Yellow bins are used for the collection of hazardous waste, as per waste management guidelines.