The Egyptian Journal of Internal Medicine

Table 5 Correlation between smoking index, smoking duration, and ECG parameters in both smoker groups (e-cigarette users and conventional cigarette smokers)

From: A comparison of electrocardiographic parameters in e-cigarette users, conventional cigarette smokers, and non-smokers

		ECG parameters
		P wave amplitude	P wave duration	QRS	PR	QT	QTc	Tpe	Tpe/qt	Tpe/qtc
Smoking index (N = 70)	r^a	0.07	0.04	0.18	0.12	0.14	0.05	0.12	0.12	0.01
Smoking index (N = 70)	p value	0.56	0.72	0.13	0.31	0.23	0.67	0.33	0.34	0.94
Smoking duration (N = 70)	r^a	− 0.11	− 0.12	− 0.07	0.19	0.11	0.05	− 0.08	− 0.08	0.04
Smoking duration (N = 70)	p value	0.35	0.31	0.55	0.10	0.37	0.71	0.49	0.49	0.97

^ar Pearson correlation coefficient

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