Table 5.

Comparison of the Risk of Sudden Cardiac Death Associated With Spatial TT′ Angle and Other ECG Parameters in Fully Adjusted Model 3

ECG Parameter	HR (95% CI) Per 1‐SD Increase	P Value
Spatial TT′ angle, °	1.36 (1.16 to 1.58)	<0.0001
Heart rate, bpm	1.01 (0.88 to 1.16)	0.867
QTc, ms	1.16 (1.02 to 1.32)	0.022
QRS axis, °	0.81 (0.71 to 0.92)	0.001
T axis, °	1.02 (0.93 to 1.11)	0.717
Spatial peak QRS‐T angle, °	1.23 (1.10 to 1.38)	<0.0001
Spatial T‐vector magnitude, mV	1.06 (0.90 to 1.25)	0.496

Model adjusted for age, sex, race, study center, cardiovascular disease, use of β‐blockers, use of antihypertensive medications, systolic blood pressure, diabetes, smoking status, total cholesterol, high‐density lipoprotein cholesterol, triglycerides, albumin, body mass index, leisure activity index, alcohol use, sodium level, and magnesium level, heart rate, corrected QT interval, spatial QRS‐T angle, QRS axis, T‐wave axis, and spatial T‐vector magnitude. bpm indicates beats per minute; HR, hazard ratio; TT′ angle, angle between consecutive T‐wave vectors.