RT Journal
A1 Diamond GA, Kaul S
T1 USing the appropriate fishing net for computed tomographic coronary angiography in daily clinical practice—reply
JF Archives of Internal Medicine
JO Archives of Internal Medicine
YR 2011
FD September 12
VO 171
IS 16
SP 1512
OP 1513
DO 10.1001/archinternmed.2011.377
UL http://dx.doi.org/10.1001/archinternmed.2011.377
AB 
First, the authors' study comprised 169 patients undergoing coronary angiography among a total of 594 candidates with suspected coronary artery disease. Even if all 169 patients underwent both forms of imaging, the remaining 425 candidates might well exhibit a preferential referral away from diagnostic verification. Without knowing the proportion of positive and negative test responses in all subjects (those referred for verification and those not referred for verification), one cannot determine the presence or degree of verification bias.1