Table 2.

Repeatability tests results

Repeatability parameter	Intra-observer	Inter-observer
rsUEG	0.99 (0.97–1.00)	0.98 (0.94–1.00)
rsAT	0.88 (0.79–0.93)	0.86 (− .70–0.88)
rsRT	0.83 (0.81–0.89)	0.76 (0.72–0.85)
rsARI	0.80 (0.79–0.87)	0.75 (0.71–0.81)
iccUEG	0.93 (0.83–0.98)	0.92 (0.81–0.97)
iccAT	0.93 (0.85–0.96)	0.88 (0.75–0.90)
iccRT	0.90 (0.87–0.92)	0.83 (0.80–0.91)
iccARI	0.90 (0.85–0.93)	0.85 (0.81–0.90)
∆AT, ms	1.25 (0.42–2.50)	1.25 (0.42–3.33)
∆RT, ms	2.08 (0.83–4.58)	2.08 (0.83–6.25)
∆ARI, ms	2.08 (0.83–5.00)	2.50 (0.83–7.50)
∆AT, %	0.91 (0.34–2.04)	1.15 (0.43–2.64)
∆RT, %	0.54 (0.21–1.24)	0.62 (0.23–1.75)
∆ARI, %	0.84 (0.34–2.11)	1.13 (0.41–3.28)

All p values (not shown) are statistically significant

Data are presented as median (IQR)

icc inter-class correlation coefficient 2-way random effects without interactions

r_sUEG average spearman’s correlation coefficient across each individual cardiac site (n = 12′937), r_sAT, r_sRT and r_sARI average spearman’s correlation coefficient measuring the similarity of the activation, repolarization and ARI sequence per participant (n = 20 in each group), iccUEG average icc across each cardiac site (n = 12′937); iccAT, iccRT and iccARI average icc measuring the similarity of the activation, repolarization and ARI sequence per participant (n = 20 in each group); ∆AT, ∆RT and ∆ARI absolute difference in AT, RT and ARI across each individual cardiac site (n = 12′937) as presented in ms and %; UEG unipolar electrogram; Other abbreviations as in Tables 1