Table 4. Comparison Between Original Clinical Risk Scoring Systems and Modified Scoring System Incorporating Points (1, 2, or 3) for Lactic Acid ≥ 2.75 mmol/L.

Score	Area	P value	95% Confidence interval		P value
			Lower bound	Upper bound
Blatchford score	0.652	0.006	0.557	0.747	Blatchford score vs.
L1-Blatchford	0.669	0.002	0.578	0.760	0.005
L2-Blatchford	0.688	0.001	0.600	0.775	0.004
L3-Blatchford	0.706	0.000	0.621	0.792	0.003
Rockall Pre-Endoscopy	0.675	0.001	0.586	0.765	Rockall pre-endoscopy vs.
L1-Rockall pre-endoscopy	0.733	0.000	0.649	0.818	0.003
L2-Rockall pre-endoscopy	0.762	0.000	0.680	0.844	0.007
L3-Rockall pre-endoscopy	0.774	0.000	0.694	0.854	0.012
Rockall Score-complete	0.742	0.003	0.633	0.850	Rockall score-complete vs.
L1-Rockall-complete	0.780	0.000	0.677	0.883	0.040
L2-Rockall-complete	0.801	0.000	0.698	0.904	0.078
L3-Rockall-complete	0.808	0.000	0.703	0.913	0.129