Study designs
Ecological Studies
- Measurements are in aggregates
- Over space and over time
- Example:
- Fat in diet and breast cancer death rates
- Measles vaccination and drop in Measles
Fat in diet and breast cancer
Measles vaccination and Measles
Ecological Fallacy
What works in aggregated measurements does not work for individuals
Case series
- A number of cases closely studied
- This study design is used for surveillance
- Also for generation of hypotheses
Disease Surveillance
Cross sectional study design
Case-Control Study
Cohort Study Design
Randomised controlled trial
Meta Analyses
Conclusion
Study designs
{"metaMigratedAt":"2023-06-15T10:46:41.046Z","metaMigratedFrom":"YAML","title":"Part VI Epidemiological study designs","breaks":false,"contributors":"[{\"id\":\"2a200359-0c0b-4042-9234-d7df32d1a61b\",\"add\":1451,\"del\":258}]"}