Table 3.

Discrimination of the models in predicting gastric intestinal metaplasia (GIM) and extensive GIM the in development and validation cohorts, reported as area under receiver operating characteristic (AUROC) curve and 95% confidence interval (CI) for 3 models: 1) baseline model containing sex, age, race/ethnicity, and smoking status, 2) H. pylori only model, and 3) expanded model that included H. pylori and baseline model

	MEDVAMC (development)		CHI-St. Luke’s (validation)		Pooled MEDVAMC & CHI-St. Luke’s
	AUROC	95 % CI	AUROC	95 % CI	AUROC	95% CI
GIM models
Baseline model	0.67	0.64–0.70	0.59	0.54–0.64	0.70	0.68–0.72
H. pylori only model	0.66	0.63–0.68	0.57	0.53–0.60	0.64	0.62–0.66
Baseline + H. pylori	0.73	0.71–0.76	0.62	0.57–0.66	0.74	0.71–0.76
Extensive GIM models
Baseline model	0.77	0.72–0.81	0.69	0.62–0.78	0.79	0.75–0.83
H. pylori only model	0.69	0.64–0.73	0.59	0.52–0.65	0.67	0.63–0.71
Baseline + H. pylori	0.82	0.78–0.85	0.71	0.63–0.79	0.82	0.78–0.85