Table 3. Quantitative ultrasound parameters by centre.
| Region | Centre | n | Broadband Attenuation (dB/MHz) mean (SD) |
Speed of Sound (m/s) mean (SD) |
Quantitative Ultrasound Index mean (SD) |
|---|---|---|---|---|---|
| North/West | Leuven | 424 | 82.4 (18.3) | 1561.2 (32.9) | 102.9 (20.5) |
| Malmo | 389 | 81.4 (16.4) | 1549.3 (29.8) | 97.5 (18.2) | |
| Manchester | 388 | 87.7 (17.1) | 1560.8 (34.5) | 104.9 (20.6) | |
| East | Lodz | 403 | 79.9 (18.4) | 1547.1 (32.6) | 96.1 (20.3) |
| Szeged | 425 | 70.4 (19.0) | 1542.7 (30.1) | 90.4 (19.7) | |
| Tartu | 397 | 79.3 (17.9) | 1544.5 (33.6) | 94.8 (20.7) | |
| South | Florence | 427 | 77.0 (17.6) | 1542.5 (32.6) | 93.0 (20.0) |
| Santiago | 405 | 84.1 (21.5) | 1557.7 (39.5) | 102.3 (24.5) |