Bone characteristics of the study population according to gender
| Variables | Male (n=174) | Female (n=158) | p Value |
|---|---|---|---|
| Lumbar spine BMD | 1.05 (0.17) | 1.10 (0.06) | 0.019 |
| Lumbar spine Z score | −0.78 (1.25) | −0.10 (1.21) | <0.0001 |
| Lumbar spine T score | −0.74 (1.32) | 0.06 (1.16) | <0.0001 |
| Total hip BMD | 1.01 (0.14) | 0.97 (0.13) | 0.002 |
| Total hip Z score | −0.18 (1.03) | −0.03 (1.10) | 0.208 |
| Total hip T score | −0.32 (1.09) | 0.01 (1.08) | 0.020 |
| Femoral neck BMD | 0.93 (0.15) | 0.92 (0.15) | 0.429 |
| Femoral neck Z score | −0.41 (1.05) | −0.05 (1.07) | 0.001 |
| Femoral neck T score | −0.66 (1.19) | −0.03 (1.05) | <0.0001 |
| Total lean mass, kg (mean±SD) | 55.4 (7.8) | 39.6 (5.4) | <0.0001 |
| Total fat mass, kg (mean±SD) | 17.8 (9.8) | 22.5 (8.1) | <0.0001 |
| % Fat mass (mean±SD) | 21.7 (7.4) | 34.4 (7.4) | <0.0001 |
| Presence of inflammatory lesions on sacroiliac MRI (n, %) | 74 (44.9%) | 39 (27.5%) | 0.002 |
| Presence of inflammatory lesions on spine MRI (n, %) | 39 (23.6%) | 24 (16.9%) | 0.145 |
| Dorsal inflammatory lesions on spine MRI | 28 (17.1%) | 13 (9.4%) | 0.050 |
| Lumbar inflammatory lesions on spine MRI | 24 (14.6%) | 13 (9.2%) | 0.148 |
BMD, bone mineral density.