PARTIAL VERIFICATION BIAS:

Another name for Workup Bias (synonym): A bias due to the differences in completeness or accuracy of diagnoses in one group vs. another¹. Also see: Workup Bias.

Reference:

1. de Groot JA, Dendukuri N, Janssen KJ, Reitsma JB, Brophy J, Joseph L, Bossuyt PM, Moons KG. Adjusting for partial verification or workup bias in meta-analyses of diagnostic accuracy studies. Am J Epidemiol. 2012;175(8):847-53. (Link to Reference)