TY - JOUR
T1 - More on Ear-Canal Hair and the Ear-Lobe Crease as Predictors for Coronary Artery Disease
AU - Blythe, Stephen L.
AU - Monteiro, George
AU - Wagner, Richard F.
AU - Wagner, Karen Dineen
PY - 1985/2/28
Y1 - 1985/2/28
N2 - To the Editor: The recent letter by Wagner et al. (Nov. 15 issue)* requires comment. When their data for combined ear-lobe crease and ear-canal hair is used, the sensitivity — which is defined as the percentage of afflicted people detected by a test — is 56.25 per cent (18 of 32), not the 90 per cent they cite, which is the predictive value of a positive test in their test population. Their false positive rate is 18 per cent (2 of 11 men without coronary artery disease). The value of this type of test in screening is a function also.
AB - To the Editor: The recent letter by Wagner et al. (Nov. 15 issue)* requires comment. When their data for combined ear-lobe crease and ear-canal hair is used, the sensitivity — which is defined as the percentage of afflicted people detected by a test — is 56.25 per cent (18 of 32), not the 90 per cent they cite, which is the predictive value of a positive test in their test population. Their false positive rate is 18 per cent (2 of 11 men without coronary artery disease). The value of this type of test in screening is a function also.
UR - http://www.scopus.com/inward/record.url?scp=0022004239&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022004239&partnerID=8YFLogxK
U2 - 10.1056/NEJM198502283120912
DO - 10.1056/NEJM198502283120912
M3 - Letter
C2 - 3969122
AN - SCOPUS:0022004239
SN - 0028-4793
VL - 312
SP - 582
EP - 583
JO - New England Journal of Medicine
JF - New England Journal of Medicine
IS - 9
ER -