Nokea
Which of the following is not a method to control for the effects of confounding?
- A. Randomization
- B. Stratification
- C. Matching
- D. Blinding
Correct Answer: D
Rationale: Blinding primarily reduces information bias, not confounding. Methods like randomization, stratification, and matching are specifically used to address confounding.
You may also like to solve these questions
Which of the following opportunistic fungal infection is seen in AIDS?
- A. candida
- B. Cryptococcus
- C. coccidioides
- D. all of the above
Correct Answer: D
Rationale: All these fungal infections are commonly seen in immunocompromised individuals, including those with AIDS.
On which day and at which meal was exposure most likely in the norovirus outbreak among tourists?
- A. April 19 Dinner
- B. April 20 Breakfast
- C. April 20 Lunch
- D. April 20 Dinner
Correct Answer: D
Rationale: Given the incubation period, dinner on April 20 aligns with symptom onset timing.
Qualitative data is not generated by
- A. Focus group discussion
- B. Observation
- C. Questionnaire
- D. Interviews
Correct Answer: C
Rationale: Qualitative data is generally not collected through structured questionnaires, which are more suited for quantitative data.
Preservative of sewage is called-
- A. chloroform
- B. haloform
- C. formalin
- D. all
Correct Answer: C
Rationale: Formalin is commonly used as a preservative for sewage samples.
Does notifiable disease surveillance focus on both morbidity and mortality?
- A. True.
- B. FALSE
Correct Answer: A
Rationale: Notifiable disease surveillance typically covers both morbidity and mortality related to the listed diseases.