Stress	Group				P Mann- Whitney test
	Control		Intervention
	mean (SD)	Median (Intermediate range)	mean (SD)	Median (Intermediate range)
On admission to the coronary angiography laboratory	53.9 (27.5)	60 (30 ─ 70)	34.5 (23.5)	30 (20 ─ 50)	0.001
Before coronary angiography	52.5 (29)	60 (25 ─ 80)	33.9 (23.5)	30 (20 ─ 50)	0.002
During coronary angiography	49.5 (27.5)	55 (30 ─ 70)	34.8 (25.3)	30 (20 ─ 50)	0.011
After coronary angiography	18 (20.6)	10 (0 ─ 25)	9.8 (14.1)	10 (0 ─ 10)	0.020