Explain the concept of 'causation' and describe the most common epidemiological study designs.

Explain the concept of ‘causation’ and describe the most common epidemiological study designs.

Explain the concept of ‘causation’ and describe the most common epidemiological study designs
Causation should include the following:
1. Factors in Causation
• Predisposing factors
• Enabling factors
• Precipitating factors
• Reinforcing factors

2. Types of causal relationships

3. Bradford-Hill criteria
Temporal relation
Plausibility
Consistency
Strength
Dose-response relationship
Reversibility
Study design
Judging the evidence
And Epidemiological study designs
1 Types of studies
1.1 Observational studies
a. ecological
b. cross-sectional
c. case-control
d. cohort
1.2 Experimental studies
a. Randomized controlled trials
b. Field Trials
c. Community Trials