Before PS matching Before PS matching P-Value After PS matching After PS matching P-value
HCM patients (n=28) Control group (n=53) HCM patients (n=28) Control group (n=28)
1st low voltage criterion: bipolar signals0.25mV 1st low voltage criterion: bipolar signals0.25mV 1st low voltage criterion: bipolar signals0.25mV 1st low voltage criterion: bipolar signals0.25mV
Total LA area (%) 9.7±10.4 5.2±7.4 0.06 9.7±10.7 2.8±3.2 0.016
Anterior wall (%) 2.8±3.4 1.2±2.4 <0.01 2.8±3.5 0.4±0.8 0.001
Posterior wall (%) 3.8±5.4 1.1±2.8 <0.01 3.7±5.5 0.3±0.6 <0.01
Inferior wall (%) 0.9±1.5 1.5±2.5 0.51 0.9±1.5 1.6±2.6 0.393
Roof (%) 1.3±1.6 0.5±1.1 <0.01 1.3±1.6 0.2±0.6 <0.01
Septum (%) 1.2±1.4 0.8±1.5 <0.01 1.1±1.4 0.3±0.9 <0.01
2nd low voltage criterion: bipolar signals0.4mV 2nd low voltage criterion: bipolar signals0.4mV 2nd low voltage criterion: bipolar signals0.4mV 2nd low voltage criterion: bipolar signals0.4mV 2nd low voltage criterion: bipolar signals0.4mV 2nd low voltage criterion: bipolar signals0.4mV 2nd low voltage criterion: bipolar signals0.4mV
Total LA area (%) 12.4±13.9 8.6±9.6 0.29 12.4±13.9 5.9±5.3 0.116
Anterior wall (%) 3.5±3.7 2.1±3.2 <0.01 3.4±3.8 1.0±1.5 0.008
Posterior wall (%) 3.4±4.0 1.9±3.3 <0.01 3.4±4.1 0.8±1.2 0.001
Inferior wall (%) 2.2±4.9 2.4±3.5 0.11 2.2±5 2.8±3.7 0.283
Roof (%) 1.8±1.7 1.0±1.5 <0.01 1.7±1.7 0.5±1.1 0.001
Septum (%) 1.7±1.8 1.3±2.2 <0.01 1.7±1.8 0.8±1.5 0.008