Table 2.

Outcome data according to different ΔQRS group.

Outcome	Model	QRS change from 1993 to 2003
		Group1 (n = 288) ΔQRS < 4 ms	Group 2 (n = 150) 4 ms ≤ ΔQRS < 8 ms		Group 3(n = 147) ΔQRS ≥ 8 ms
		Ref	HR (95% CI)	P value	HR (95% CI)	P value
MACE	No events (%)	65 (22.6)	41 (27.3)		49 (33.3)
	Unadjusted	1.00 (ref)	1.27 (0.86–1.88)	0.232	1.59 (1.10–2.31)	0.014
	Adjusted	1.00 (ref)	1.26 (0.85–1.86)	0.249	1.56 (1.07–2.27)	0.021

Adjusted for: body mass index, systolic blood pressure, hyperlipidemia, diabetes and heart rate.