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detection bias

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detection bias
[ditek′shən]
a potential artifact in epidemiologic data caused by the use of a particular diagnostic technique or type of equipment. As an example, cancer rates may vary in different regions or periods, not because of an actual difference in the incidence of the disease but because of different diagnostic technologies.


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The likelihood of such detection bias is unclear, although a similar difference between recorded cases and recorded subcounties infected preceded the epidemic increase in 1976 (Figure 3).
If all cases of HFRS were identified, no detection bias would occur.
 
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