Table 2.

The Prevalence of Early Repolarization ECGs and Their Prognosis in the Population Studies

Coutry	Authors	Year Published	Position of ERP	Individuals Screened, n	Male Sex	Mean Age at Baseline, y	J point elevation		Mean Follow-up Period, y	RR of Death According to the ERP
Coutry	Authors	Year Published	Position of ERP	Individuals Screened, n	Male Sex	Mean Age at Baseline, y	≥ 0.1 mV , n (%)	≥ 0.2 mV , n (%)	Mean Follow-up Period, y	Cardiac	Sudden or Arrhythymic
Europe
Finland	Tikkanen et al²⁵⁶	2009	Inf or Lat	10864	52%	44 ± 8	630 (5.8)	67 (0.6)	30 ± 11	1.28^* in Inf 1.34^* in Lat	1.43^* in Inf 0.75 in Lat
Germany	Sinner et al²⁵⁷	2010	Inf or Lat	6213	49%	52 ± 10	812 (13.1)	not described	19	3.44^*	not described
France	Rollin et al	2012	Inf or Lat	1161	52%	50 ± 9	159 (13.7)	74 (6.4)	14 ± 2	5.28^* in Inf 6.27^* in Lat^†	not described
North America
USA	Klatsky et al²⁵³	2003	All	73088	44%	37 ± 13	670 (0.9)	494 (0.7)	14	0.8^†	not described
USA	Uberoi et al	2011	Inf or Lat	29281	87%	55 ± 15	664 (2.3)	0	8 ± 4	1.73 in Inf 0.83 in Lat^†	not described
USA	Olson²⁵⁸	2011	All	15141	44%	54 ± 6	1866 (12.3)	not described	17 ± 4	not described	1.23 in all 2.03^* in whites
USA	Ilkhanoff et al²⁵⁹	2014	All	5039	46%	25	1249 (20.9)^‡	not described	23	0.96^†	not described
Asia
Japan	Haruta et al²⁶⁰	2011	Inf or Lat	5976	44%	not described	1429 (23.9)	not described	24 ± 15	0.75^*	1.83^*
Japan	Hisamatsu et al²⁶¹	2013	All^§	7630	41%	52	264 (3.5)	not described	15	2.54^*	not described

Ant indicates anterior leads; ECG, electrocardiogram; ERP, early repolarization pattern; Inf, inferior leads; Lat, lateral leads; RR, relative risk; and USA, United States of America.

Statistically significant

^†

For the cardiovascular death

^‡

At baseline

^§

≥ 0.2 mV in anterior leads