Term
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Definition
| follow large group, end is when one group has been exposed and other unexposed, groups are then compared |
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Term
| what are strengths of cohorts? |
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Definition
| prospective, high rates of exposure, since prospective it has a low recall bias |
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Term
| what are limitations of cohort studies? |
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Definition
| too big of sample size, too long of time frame, expensive, large follow up |
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Term
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Definition
| compare group with disease with a group without disease over time |
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Term
| what are strengths of case control studies? |
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Definition
| less time, small sample size, can measure rarer cases |
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Term
| what are limitations of case control studies? |
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Definition
| comparability, recruitment, recall bias |
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Term
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Definition
| snapshot of large sample. form disease and no disease groups and compare exposures |
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Term
| what are strengths of cross sectional studies? |
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Definition
| short, accurate for things done at that moment, can identify risk factors |
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Term
| what are limitations of cross sectional studies? |
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Definition
| large population, recall and measurement errors, no changes in people (just differences in group) |
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Term
| what are ecological studies and what is an example? |
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Definition
| data generated from population as a whole, (researchers look at death certificates for prevalence of disease |
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