Table 2.

Frequency and Characteristics of Early Repolarization in Cases and Controls

	Cases (n = 52)	Controls (n = 50)	P Value
Presence of ER (no., %)	29 (55.7%)	14 (28%)	0.008
Type of ER (no., %)
Lateral	7 (13.4%)	4 (8%)	0.52
Inferior/inferolateral	15 (28.8%)	9 (18%)	0.29
Global	7 (13.4%)	1 (2%)	0.06
J wave morphology (no., %)
Slurred	6 (11.5%)	8 (16%)	0.71
Notched	23 (44.2%)	6 (12%)	0.0007
J wave amplitude (mm)	1.13 ± 1.23 (median 1)	0.6 ± 1.08 (median 0)	0.008
ST segment elevationa (no., %)	28 (53.8%)	12 (24%)	0.003
ST segment morphology (no., %)
Upsloping	9 (17.3%)	3 (6%)	0.12
Horizontal	19 (36.5%)	8 (16%)	0.033

ER = early repolarization.

^aRelated to early repolarization.