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Doppler sonograms in hepatic veins in patients with different fibrosis stage of IHS n (%)
| Group | Patients (n) | HV0 | HV1 | HV2 | Total |
| Control group | 46 | 43 (93.50) | 3 (6.50) | 0 (0.00) | 46 (100) |
| Mild group | 12 | 2 (16.67) | 10 (83.33) | 0 (0.00) | 12 (100) |
| Moderate group | 12 | 1 (8.33) | 10 (83.4) | 1 (8.33) | 12 (100) |
| Severe group | 15 | 1 (6.67) | 10 (66.67) | 4 (26.67) | 15 (100) |
Chi-square test, χ2 = 37.67, P < 0.001.
