Age, blood tests and comorbidities and AIMS65 risk scores outperform Glasgow-Blatchford and pre-endoscopic Rockall score in patients with upper gastrointestinal bleeding

Table 3 Linear regression analysis of age older than 65 score against each determined outcome

Model	R	R square	Adjusted R square	Std. error of the estimate	Change statistics
					R square change	F change	df1	df2	Sig. F change
1	0.261 (a)	0.068	0.065	0.994	0.068	260.305	1	361	0.000
2	0.281 (b)	0.079	0.074	0.989	0.011	40.320	1	360	0.038
3	0.286 (c)	0.082	0.074	0.989	0.003	10.010	1	359	0.316
4	0.316 (d)	0.100	0.090	0.981	0.018	70.290	1	358	0.007