Table 2 Percentage and statistical analysis of some ECG findings among the 3 groups
From: Study of pulmonary hypertension in post-COVID-19 patients by transthoracic echocardiography
Group I | Group II | Group III | χ2 | p-value | |||
|---|---|---|---|---|---|---|---|
S1 wave | Normal | N | 15 | 13 | 13 | 7.430 | 0.024* |
% | 100.0% | 86.7% | 65.0% | ||||
Deep | N | 0 | 2 | 7 | |||
% | 0.0% | 13.3% | 35.0% | ||||
Q3 wave | Normal | N | 15 | 13 | 11 | 11.053 | 0.004* |
% | 100.0% | 86.7% | 55.0% | ||||
Dee | N | 0 | 2 | 9 | |||
% | 0.0% | 13.3% | 45.0% | ||||
T3 wave | Normal | N | 15 | 14 | 12 | 11.156 | 0.004* |
% | 100.0% | 93.3% | 60.0% | ||||
Inverted | N | 0 | 1 | 8 | |||
% | 0.0% | 6.7% | 40.0% | ||||