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The ratio of slow-phase velocity in the head-hanging position and sitting position of 84 patients with PSC-can.
| Vertical/Horizontal | Torsional/Horizontal | Vertical/Torsional | |
| Head-hanging position | 3.3 (1.7–7.6) | 3.9 (1.8–7.6) | 1.0 (0.5–1.8) |
| Sitting position | 2.1 (1.1–6.8) | 1.5 (1.0–3.8) | 1.2 (0.8–2.8) |
