Epidemiological Studies: Methods and Benefits (HSC SSCE Biology): Flashcards
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3 types of epidemiological studies
3 types of epidemiological studies
Descriptive, analytical, intervention
Questions descriptive studies answer
Questions descriptive studies answer
Who, what, where, when
Questions analytical studies answer
Questions analytical studies answer
Why and how
Morbidity definition
Morbidity definition
Number of cases of the disease
Incidence definition
Incidence definition
Number of new cases in a specific time period
Case-control studies compare
Case-control studies compare
People with disease (cases) vs without disease (controls)
Cohort studies follow
Cohort studies follow
Similar groups over long time; differ in exposure
Placebo definition
Placebo definition
Inactive substance that looks like real treatment
Random vs systematic errors
Random vs systematic errors
Unpredictable variations vs consistent deviation
Confounding factor
Confounding factor
Unrecognised factor affecting study results, causing bias