
Lead time is the length of time between the detection of a disease (usually based on new, experimental criteria) and its usual clinical presentation and diagnosis (based on traditional criteria). Lead time bias is the bias that occurs when two tests for a disease are compared, and one test (the new, experimental one) diagnoses the disease earlier,...
Found on
http://en.wikipedia.org/wiki/Lead_time_bias

Type: Term Definitions: 1. apparent increased survival time resultant from earlier, more timely, diagnosis.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=10082
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