Clinical Performance of Prediction Rules and Nasogastric Lavage for the Evaluation of Upper Gastrointestinal Bleeding: A Retrospective Observational Study

Table 4

Test parameters for each scoring system.

Prediction scoring system	Sensitivity	95% CI	Specificity	95% CI	NPV	95% CI	Negative LR	95% CI
Blatchford (GBS)	98.30	96.64–99.95	22.78	16.24–29.33	90.00	80.70–99.30	0.07	0.0–0.15
GBS + NGL	99.57	98.74–100.00	22.78	16.24–29.33	97.30	92.07–100.00	0.02	−0.02–0.06
Clinical Rockall Score (1)	92.77	89.45–96.08	32.28	24.99–39.57	75.00	64.71–85.29	0.22	0.11–0.34
Adamopoulos (≥7)	29.79	23.94–35.63	92.41	88.27–96.54	46.95	41.40–52.49	0.76	0.69–0.83
Adamopoulos (≥4)	71.06	65.27–76.86	79.11	72.78–85.45	64.77	58.03–71.51	0.37	0.29–0.44
Tamarro	79.57	74.42–84.73	60.76	53.15–68.37	66.67	58.97–74.37	0.34	0.24–0.43