Table 1.

Monozygotic and dizygotic twin correlations from the saturated model.

ECG parameter	Rate	MZ correlation	DZ correlation
TpTe	Low	0.62 (0.36–0.77)	0.12 (−0.27–0.46)
	Medium	0.69 (0.49–0.81)	0.07 (−0.40–0.49)
	High	0.55 (0.23–0.73)	−0.39 (−0.71–0.34)
	Resting	0.55 (0.29–0.71)	0.00 (−0.35–0.36)
Th	Low	0.65 (0.34–0.80)	0.34 (−0.05–0.61)
	Medium	0.66 (0.43–0.79)	0.46 (0.10–0.69)
	High	0.53 (0.22–0.72)	0.42 (0.02–0.67)
	Resting	0.54 (0.26–0.71)	0.06 (−0.25–0.36)
QT	Low	0.71 (0.49–0.82)	0.07 (−0.33–0.45)
	Medium	0.62 (0.38–0.76)	0.15 (−0.20–0.50)
	High	0.50 (0.18–0.69)	0.25 (−0.17–0.57)
	Resting	0.51 (0.23–0.69)	0.14 (−0.16–0.41)
QRS	Low	0.52 (0.19–0.72)	−0.10 (−0.46–0.30)
	Medium	0.52 (0.23–0.71)	−0.10 (−0.43–0.27)
	High	0.42 (0.12–0.62)	0.07 (−0.47–0.55)
	Resting	0.34 (0.06–0.56)	−0.14 (−0.44–0.21)

99% CIs are shown in parentheses.