The number and percentages of US grey scale and US power Doppler and MRI-positive joints at baseline as a function of the scintigraphic status at baseline
| Scintigraphic negative | Scintigraphic positive | OR | p Value | |||
|---|---|---|---|---|---|---|
| Patients with RA and pSpA | ||||||
| US assessment | Normal US findings | Abnormal US findings | Normal US findings | Abnormal US findings | ||
| US grey scale | 192 (90.6%) | 20 (9.4%) | 28 (37.8%) | 46 (62.2%) | 15.77 | <0.001 |
| US power Doppler | 207 (97.6%) | 5 (2.4%) | 33 (44.6%) | 41 (55.4%) | 51.44 | <0.001 |
| Patients with axSpA | ||||||
| MRI assessments SIJs | No BME | BME | No BME | BME | ||
| BME per quadrant | 34 (70.8%) | 14 (29.2%) | 7 (21.9%) | 25 (78.1%) | 8.67 | <0.001 |
The OR refers to the odds of a joint being US grey scale and US power Doppler positive or MRI positive in the scintigraphic-positive as compared with the scintigraphic-negative group. For all tests, p values <0.05 are considered to indicate statistical significance.
axSpa, axial spondyloarthritis; pSpA, peripheral spondyloarthritis; RA, rheumatoid arthritis; SIJs, sacroiliac joints; US, ultrasound.