Practice Questions

44. A study investigating the association between cell phone use and brain cancer finds a statistically significant result, but the confidence interval is very wide. What critical interpretation should be made?

A. The result is highly precise.
B. The result is statistically significant, but the effect estimate is imprecise and less reliable.
C. The study was poorly designed.
D. There is no association.
nmdcat.online BS Nursing
Jun 6, 2026

43. A pharmaceutical company is conducting a Phase II clinical trial for a new antidepressant. What medicinal aspect is primarily assessed in this phase?

A. Long-term safety and effectiveness in a large population.
B. Preliminary efficacy, dosage range, and short-term side effects in a small number of patients with the target condition.
C. Safety in healthy volunteers.
D. Post-marketing surveillance.
nmdcat.online BS Nursing
Jun 6, 2026

41. A patient presents to an emergency room with symptoms of botulism. What is the urgent epidemiological concern for public health?

A. Treating the individual patient is the only concern.
B. Immediate notification of public health authorities to investigate the source and prevent further cases.
C. Waiting for lab confirmation before any action.
D. Discharging the patient with antibiotics.
nmdcat.online BS Nursing
Jun 6, 2026

39. A retrospective cohort study investigating a potential occupational hazard and a rare disease is conducted. What critical challenge often arises in this type of study?

A. Ease of follow-up.
B. Difficulty in obtaining reliable historical exposure data.
C. High cost.
D. Ethical concerns about randomization.
nmdcat.online BS Nursing
Jun 6, 2026

36. Multiple individuals attending a church picnic develop severe gastrointestinal symptoms within hours. What is the urgent epidemiological action for public health officials?

A. Advise people to avoid all social gatherings.
B. Conduct immediate interviews to identify common food items consumed and onset times to pinpoint the source.
C. Wait for all affected individuals to seek medical care.
D. Focus on environmental sanitation of the church premises.
nmdcat.online BS Nursing
Jun 6, 2026
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