Table 3
Analysis of the echocardiograms of the patients before, during and after chemotherapy
| Clinical characteristics | Before chemotherapy (
±s) | During chemotherapy (
±s) | After chemotherapy (
±s) | F(B) or χ² | P12 | P13 | P23 |
| Heart rate (times/min) | 74.017±11.195 | 80.627±13.391 | 81.373±13.312 | <0.001(B) | <0.001 | <0.001 | 0.963 |
| P-wave time (s) | 0.107±0.010 | 0.106±0.013 | 0.105±0.011 | 0.193(B) | 0.632 | 0.153 | 0.875 |
| P-R interphase (s) | 0.152±0.020 | 0.153±0.019 | 0.151±0.018 | 0.696(B) | 1.000 | 0.871 | 0.801 |
| QRS complex (s) | 0.086±0.010 | 0.086±0.008 | 0.086±0.008 | 0.968(B) | 0.995 | 1.000 | 0.993 |
| Q-T interphase (s) | 0.399±0.036 | 0.398±0.040 | 0.397±0.040 | 0.891(B) | 0.989 | 0.948 | 0.989 |
P12, P13 and P23 represent the calculation results of corresponding tests for indicators before and during chemotherapy, before and after chemotherapy, and during and after chemotherapy, respectively.