Cohort Studies Flashcards
What do all studies involved?
All studies involve some descriptive or analytic comparison of exposure and disease status.
What are the three basic types of observational analytical study designs?
The three basic types of observational analytical study designs are, cohort studies, case-control studies, and cross-sectional studies.
What do analytical study design options include?
Analytical study design options include,observational or interventional
What can specific epidemiological study designs reveal?
They can reveal relationships between things.
How could specific epidemiological study designs reveal relationships between things?
First, they determine whether there is an association between a factor and the development of a disease. Second, using those associations they derive inferences regarding a possible relationship.
What do and analytical studies use or base their information on to collect data?
They use control and experimental groups, randomized groups, and dependent and independent factors.
In analytical studies is data collected with or without a bias?
In analytical studies data is collected without a bias.
What is the cohort effect?
The cohort effect is changes and variation in the disease or health status of a population being studied in overtime.
What are the three types of cohort studies?
Prospective [concurrent], retrospective [historical], and restricted [restricted exposures] are the three types of cohort studies.
What are the two basic ways of selecting cohort groups?
The two basic ways of selecting cohort groups are, selecting a defined population before infection, or selecting a cohort on the basis of a certain factor.
What is a major problem with a prospective cohort study?
A prospective cohort study must be followed up for a very long period of time.
What are the three steps of the hypothetical cohort study approach?
One. Exhibit people over their lifetime for contraction of diseases, also asked questions concerning lifestyle. Two.take blood and do lab tests [as ready as possible] Three. Do the same tests every year for a period of years.
What are the five potential biases in cohort studies?
Information bias, bias in estimation of the outcome, bias from non response, bias from losses to follow up, and analytic bias are the five potential biases of cohort studies.
What is a cohort group?
A cohort group is a group of individuals that all share something in common.
