- They are expensive.
- They cannot establish individual-level associations due to the ecological fallacy.
- They are always biased.
- They only measure incidence.
No category found.
- Phase I.
- Phase II.
- Phase III.
- Phase IV (Post-marketing surveillance).
- Incidence rate.
- Prevalence rate.
- Case-fatality rate.
- Mortality rate.
- Issue a general health warning about kidney disease.
- Conduct a rapid field investigation to identify common exposures, geographical distribution, and patient characteristics.
- Wait for more cases to appear.
- Assume it's a genetic predisposition.
- Sensitivity.
- Specificity.
- Positive Predictive Value.
- Negative Predictive Value.
- Strength of association.
- Consistency.
- Specificity.
- Dose-response relationship.
- The drug is definitely ineffective.
- The study lacked sufficient power to detect a true effect, or the drug truly has no significant effect.
- The drug is safe and effective.
- The placebo effect was too strong.
- Point prevalence.
- Period prevalence.
- Incidence rate.
- Case-fatality rate.
- Treat the child and send them back to school.
- Isolate the child, notify public health, and initiate immediate contact tracing and prophylactic treatment/vaccination for contacts.
- Wait for other cases to appear before acting.
- Only treat the child's symptoms.
- Generalizability.
- Statistical significance.
- Clinical relevance.
- Bias.
- Selection bias.
- Information bias (e.g., recall bias).
- Confounding.
- Observer bias.
- Anecdotal reports from patients.
- Robust evidence of efficacy and safety from Phase III clinical trials.
- Only pre-clinical animal studies.
- Opinions from key opinion leaders.
- Screening.
- Surveillance.
- Case reporting.
- Research.
- Close the hospital immediately.
- Implement infection control measures, isolate suspected cases, and initiate contact tracing within the hospital.
- Wait for the cluster to spread to the general population.
- Treat all healthcare workers prophylactically.
- Sensitivity.
- Specificity.
- Positive Predictive Value.
- Negative Predictive Value.
- The result is highly precise.
- The result is statistically significant, but the effect estimate is imprecise and less reliable.
- The study was poorly designed.
- There is no association.
- Long-term safety and effectiveness in a large population.
- Preliminary efficacy, dosage range, and short-term side effects in a small number of patients with the target condition.
- Safety in healthy volunteers.
- Post-marketing surveillance.
- Epidemic.
- Pandemic.
- Endemic.
- Outbreak.
- Treating the individual patient is the only concern.
- Immediate notification of public health authorities to investigate the source and prevent further cases.
- Waiting for lab confirmation before any action.
- Discharging the patient with antibiotics.
