Highlights the basic classification of epidemiological studies

1. Basic Concepts in Small Doses
5
Weam Banjar; BDS., MS.

2. Disclosure
• None
• Basic concepts in small doses highlights basic
concepts in research particularly in areas of concerns
for health care professionals
Banjar WM

3. Banjar WM
Epidemiological
Studies
Observational
Descriptive
Cross-sectional Case-report Case series
Analytical
Case Control Cohort Study
Experimental
Clinical Trial

4. Experimental studies : manipulation of exposure by the
examiner
Observational Studies: No manipulation of exposure by
examiner
Banjar WM

5. Observational Studies
Case Report
• Describe one clinical case
Case Series
• A case report but more than one clinical case
Cross Sectional
• Usually for prevalence studies or determining a panoramic overview
Banjar WM

6. Banjar WM
Dichotomization
Bases
Cross sectional
studies
Independent and
dependent variables
are measured
simultaneously
Case control
Dichotomization is
based on the
outcome
Cohort Studies
Dichotomization is
based on the
exposure
Clinical trials
Dichotomization in
based on exposure

7. Good Luck
Banjar WM