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. 2021 Apr 26;10(9):e019778. doi: 10.1161/JAHA.120.019778

Table 4.

ECG Parameters

Female Patients P Value Male Patients P Value
Normal Structural Normal Structural
No. 16 17 19 44
RR, ms 701.8±171.2 651.4±130.0 0.682 624.0±155.1 668.9±148.8 0.182
PR, ms 137.4±20.0 143.5±16.6 0.395 152.2±26.8 160.1±33.5 0.281
QRS, ms 101.9±16.5 95.8±10.6 0.483 101.7±9.2 99.6±13.2 0.264
QT, ms 351.0±40.0 406.2±46.1 0.003 342.7±36.4 409.3±45.8 0.000*
QT dispersion 46.8±17.9 48.2±22.9 0.478 48.2±22.9 51.1±27.2 0.771
Tpeak−Tend, ms 128.6±48.0 123.4±50.3 0.697 125.6±40.1 128.0±32.0 0.373
Tpeak−Tend dispersion 30.4±25.3 32.8±30.2 0.689 37.9±22.2 40.1±22.3 0.435
Tpeak−Tend/QT 0.36±0.14 0.28±0.07 0.177 0.36±0.10 0.31±0.06 0.052
Fridericia formula
Corrected QT 397.4±32.7 470.9±48.9 0.002 403.8±30.4 471.0±47.1 0.000*
Corrected QT dispersion 48.8±21.4 44.6±25.5 0.631 57.1±28.4 58.8±31.7 0.857
Framingham formula
Corrected QT 351.0±40.1 406.2±46.1 0.002 342.7±36.4 409.4±45.8 0.000*
Corrected QT dispersion 43.6±19.4 39.7±22.6 0.818 48.3±22.9 51.2±27.2 0.865
Bazzet formula
Corrected QT 423.8±38.3 507.7±56.6 0.000* 439.3±38.6 506.2±56.8 0.000*
Corrected QT dispersion 48.8±27.4 48.0±27.4 0.841 55.7±35.6 57.4±37.6 0.818
*

<0.0001.

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