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## Study Approach | Study Approach | Goal | |---|---| | Case series | Describe a group of individuals with a disease | | Cross-sectional study | Describe exposure and/or disease status in a population | | Case-control study | Compare exposure histories in people with a disease (cases) and people wi...

## Study Approach | Study Approach | Goal | |---|---| | Case series | Describe a group of individuals with a disease | | Cross-sectional study | Describe exposure and/or disease status in a population | | Case-control study | Compare exposure histories in people with a disease (cases) and people without a disease (controls) | | Cohort study | Compare rates of a new (incident) disease in people with different exposure histories or follow a population forward in time to look for incident cases of a disease | | Experimental study | Compare outcomes in participants assigned to an intervention or control group | | Qualitative study | Seek to understand how individuals and communities perceive and make sense of the world and their experiences | | Correlational (ecological) study | Compare average levels of exposure and disease in several populations | | Review/meta-analysis | Synthesize existing knowledge |