Table 4. Sources of selection bias in excluded patients.

	SCS				HOTEL
	Included	Excluded	p-value	Included	Excluded	p-value
Age	66.04	60.45	p<0.0001	65.63	59.45	p<0.0001
Sex -female	519/1080	941/1966	0.919	699/1470	761/1576	0.685
24-h mortality	9/1080	17/1966	0.928	13/1470	13/1576	0.858
30-day mortality	58/1080	138/1966	0.08	-	-	-
Charlson score			0.393			0.716