Table 2.

Unadjusted Repolarization‐Related ECG Variables by Hormone Use Category

ECG Interval	No MHT	Past MHT	EST	COMB
QRS (ms)	85.6 ± 0.1	85.5 ± 0.1	86.0 ± 0.1	85.0 ± 0.1
QT (ms)	406.5 ± 0.3	407.5 ± 0.5	410.3 ± 0.3*	406.5 ± 0.3
QTC (ms)	423.8 ± 0.2	424.3 ± 0.3	425.6 ± 0.2*	422.7 ± 0.2*,†,‡
QTLC	415.8 ± 0.2	416.3 ± 0.3	417.9 ± 0.2*	415.0 ± 0.2
JT (ms)	321.0 ± 0.3	322.0 ± 0.5	324.3 ± 0.3*	321.5 ± 0.3

EST = estrogen therapy; COMB = combined estrogen and progesterone use; MHT = menopausal hormone therapy.

* P < 0.05 versus no MHT, ^† P < 0.05 versus past MHT, ^‡ P < 0.05 versus EST.