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hodyreva [135]
3 years ago
8

Why is a longitudinal study better than a cross-sectional study for examining how many years cancer survivors stay in remission?

Biology
1 answer:
Liono4ka [1.6K]3 years ago
7 0
<span>A cross-sectional study examines all of the participants at one time. So for a cross-sectional study of cancer survivors, we would gather some sample of former patients and find out how long they have been in remission.

The problem with that cross-sectional design is we would be missing the people whose cancer had returned and caused them to die before our experiment started; we would have introduced a problem called "survivor bias" by only counting people who were STILL in remission and still alive.

A better experiment will use a longitudinal design of enrolling people whose cancer has just gone into remission, and following them to see how long they stay healthy.</span>
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