B.
Standardization of methods.
✓
D.
Patient recruitment.
✓
A.
The genetic marker directly causes the disease.
✓
B.
The genetic marker is associated with the disease, but confounding or other factors could be at play.
✓
C.
The study proves nothing.
✓
D.
Genetic markers are irrelevant.
✓
B.
Clinical significance.
✓
C.
Communicable period.
✓
A.
Wait to see if it jumps to humans.
✓
B.
Implement immediate culling of infected poultry, establish a cordon sanitaire, and enhance surveillance for human cases.
✓
C.
Only vaccinate the poultry workers.
✓
D.
Blame the farm owners for poor hygiene.
✓
A.
A general population health survey.
✓
B.
An occupational epidemiology study to identify workplace hazards.
✓
C.
A study of genetic predispositions.
✓
D.
An investigation into individual lifestyle choices.
✓
A.
Blinding of participants.
✓
B.
The potential for prolonged exposure to a placebo for those who are not receiving active treatment.
✓
C.
The cost of the drug.
✓
D.
The number of participants.
✓
C.
Cumulative incidence.
✓
A.
Advise people to stay indoors.
✓
B.
Investigate potential environmental triggers (e.g., air pollution, allergen peaks) or an emerging respiratory pathogen.
✓
C.
Assume it is a normal seasonal fluctuation.
✓
D.
Only focus on treating individual patients.
✓
