Identify risk factors


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Cohort study
Follow a group of people over time to see who develops the disease. People exposed to risk factors, correlations recorded so links can be identified. Take a long time for condition to develop, study can take years, be expensive
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Case-control study
Group of people with a disease compared to control group. Information collected about risk factors that they have been exposed to, factors that develop disease identified. Investigate role of unknown factors. Control group should be representative.
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Clear aim
Clearly stated hypothesis or aim. The design of the study must be appropriate to the stated hypothesis or aim and produce results that are valid and reliable.
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Representative sample
Sample selected from the wider population that the study's conclusions can be applied to. Selection bias> participants in a study that are not representative of target population. Drop out rate> minimum. Individual differences accounted for.
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Valid and reliable results
Must produce valid data, measurements provide information the study set out to measure. Reliable method used different times/people, produce similar results. Sample large> result not by chance. Effect of variables considered
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Other cards in this set

Card 2

Front

Group of people with a disease compared to control group. Information collected about risk factors that they have been exposed to, factors that develop disease identified. Investigate role of unknown factors. Control group should be representative.

Back

Case-control study

Card 3

Front

Clearly stated hypothesis or aim. The design of the study must be appropriate to the stated hypothesis or aim and produce results that are valid and reliable.

Back

Preview of the back of card 3

Card 4

Front

Sample selected from the wider population that the study's conclusions can be applied to. Selection bias> participants in a study that are not representative of target population. Drop out rate> minimum. Individual differences accounted for.

Back

Preview of the back of card 4

Card 5

Front

Must produce valid data, measurements provide information the study set out to measure. Reliable method used different times/people, produce similar results. Sample large> result not by chance. Effect of variables considered

Back

Preview of the back of card 5

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