Association between ventricular repolarization variables and cardiac diastolic function: A cross-sectional study of a healthy Chinese population

Table 3 Relationship between electrocardiography repolarization variables and echocardiographic diastolic parameters using a stepwise multiple regression model

	Model 1		Model 2		Model 3
	Beta	P-value	Beta	P-value	Beta	P-value
QT interval (ms)
A (cm/s)	0.152	0.002	0.033	0.435	0.028	0.504
DT (ms)	0.244	< 0.001	0.194	< 0.001	0.182	< 0.001
LAV (mL)	0.312	< 0.001	0.271	< 0.001	0.248	< 0.001
QTc interval (ms)
A (cm/s)	0.324	< 0.001	0.186	< 0.001	0.178	< 0.001
E/A	-0.288	< 0.001	-0.131	0.001	-0.105	0.008
LAV (mL)	0.209	< 0.001	0.152	0.002	0.105	0.019
LAVI (mL/m2)	0.255	< 0.001	0.181	< 0.001	0.142	0.003
Tpe (ms)
A (cm/s)	0.189	< 0.001	0.102	0.015	0.099	0.016
E/A	-0.155	0.002	-0.057	0.153	-0.035	0.355
LAV (mL)	0.157	0.001	0.119	0.014	0.167	0.120
LAVI (mL/m2)	0.148	0.003	0.098	0.039	0.080	0.086
Tpec (ms)
E (cm/s)	-0.121	0.014	-0.062	0.185	-0.032	0.489
A (cm/s)	0.237	< 0.001	0.150	< 0.001	0.143	< 0.001
E/A	-2.223	< 0.001	-0.126	0.002	-0.098	0.010
LAV (mL)	0.099	0.045	0.059	0.233	0.015	0.749
Tpe/QT
E (cm/s)	-0.138	0.005	-0.100	0.030	-0.066	0.152
A (cm/s)	0.157	0.001	0.099	0.017	0.097	0.018
E/A	-0.175	< 0.001	-0.111	0.005	-0.083	0.028
Tpe/QTc
DT (ms)	0.102	0.038	0.078	0.101	0.072	0.139
LAV (mL)	0.100	0.041	0.079	0.100	0.037	0.388

E: Early diastolic inflow velocity; A: Late diastolic inflow velocity; DT: E-wave deceleration time; LAV: Left atrial volume; LAVI: Left atrial maximum volume index. Model 1: Unadjusted model; Model 2: Adjusted for age; Model 3: Fully adjusted for age, gender, body mass index, systolic blood pressure, diastolic blood pressure, triglyceride, total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, fasting blood glucose and serum creatinine. Standardized coefficients and P-values were the outcomes of the regression analyses.