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Cohort Study vs. Case-control Study

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Why is cohort studies more expensive than case-control studies? I know one problem is cohort studies often must be followed up for a long period to determine whether the outcome of interest has developed and they are more expense than case-control studies. What other rationale explains why cohort studies are more expensive than case-control studies?

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Hi,

Interesting question! Let's take a closer look!

1. Why are cohort studies more expensive than case-control studies? I know one problem is cohort studies often must be followed up for a long period to determine whether the outcome of interest has developed and they are more expense than case-control studies. What other rationale explains why cohort studies are more expensive than case-control studies?

First, long follow-ups are expensive in terms of paying the researcher and travel expenses (researcher and/or participants).

Second, some participants are also more costly than other participants, such as the needs for routine medical examination and sometimes laboratory investigations (2) and perhaps setting up a clinic to provide the people in the control group intervention (1). For example, "in cohort or survey techniques for incidence and prevalence of various diseases, a major issue that has to be considered is how much of intervention is justified and whether one is justified in withholding interventions. For example, if you are looking at longitudinal morbidity in a population group, should you give them health education that is well established with ...

Solution Summary

Through definition and a solid rationale, this solution explains why cohort studies are more expensive than case-control studies.

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