Association between baseline MRI-detected spinal inflammation and trabecular bone density at the same vertebra
| Independent variables | Bone density (Hounsfield units) | |
| Univariable analysis Reg coeff. (95% CI) N=910 to 985 | Multivariable analysis Reg coeff. (95% CI) N=985 | |
| MRI-BME (presence) | −51 (−63 to −39) | −51 (−63 to −39) |
| Age (years) | −1 (−2 to 1) | −1 (−2 to 1) |
| Gender (male) | 21 (−20 to 63) | 16 (−24 to 57) |
| TNFi treatment (yes) | 26 (−7 to 59) | 27 (−6 to 61) |
| Baseline syndesmophytes (presence)* | −42 (−54 to −30) | † |
Significant associations were highlighted in bold (p<0.05).
*Absolute agreement of readers.
†Not included in the multivariable analysis because of collinearity with MRI-BME.
BME, bone marrow oedema; TNFi, tumour necrosis factor inhibitors.