20 September 2023: Clinical Research
Early Echocardiography and ECG Changes Following Radiotherapy in Patients with Stage II–III HER2-Positive Breast Cancer Treated with Anthracycline-Based Chemotherapy with or without Trastuzumab-Based Therapy
Radu Valeriu Toma 12ABCG , Zgura Anca 1E , Oana Gabriela Trifănescu 12A , Laurenţia Nicoleta Galeş 12D* , Antonia Ruxandra Folea 2CDEF , Loredana Stanca 3B , Liviu Bîlteanu 234ABCDEF* , Rodica M. Anghel 1ADOI: 10.12659/MSM.941754
Med Sci Monit 2023; 29:e941754
Supplementary Table 9 Number of echocardiographic and electrocardiographic investigations, follow-up period of patients – descriptive statistics (mean, standard error of the mean, standard deviation, variance, range, minimum, maximum, 25th, 33rd, 50th or median, 67th and 75th percentiles).
| Follow-up | Number of ecocardiographies | Number of electrocardiograms | ||
|---|---|---|---|---|
| Mean | 858.16 | 3.63 | 2.55 | |
| SE Mean | 107.03 | 0.27 | 0.20 | |
| SD | 835.95 | 2.20 | 2.00 | |
| Variance | 698816.37 | 4.83 | 1.46 | |
| Range | 4379 | 8 | 6 | |
| Minimum | 120 | 1 | 1 | |
| Maximum | 4499 | 9 | 7 | |
| Percentiles | 25 | 388.50 | 2 | 1 |
| 33 | 471.72 | 2 | 2 | |
| 50 | 651.00 | 4 | 2 | |
| 67 | 792.02 | 5 | 3 | |
| 75 | 1026.50 | 5 | 3 | |