Tan et al reported a model for predicting gastric intestinal metaplasia in an American adult. The authors are from Baylor College of Medicine and Michael E. DeBakey Veterans Affaris Medical Center in Houston.
Patient selection: American adult
Parameters:
(1) age in years
(2) sex
(3) race or ethnicity
(4) smoking status
(5) H. pylori status
Parameter
Finding
Points
age in years
< 60 years
0
60 to 69.99 years
0.522
>= 70 years
0.892
sex
female
0
male
0.969
race or ethnicity
Hispanic
0.842
Black
0.623
other
0
smoking status
never
0
former
0.3138
current
0.721
H. pylori status
negative
0
positive
1.272
value of X =
= SUM(points for all of the parameters) - 3.880
probability of gastric intestinal metaplasia =
= 1 / (1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.73.
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