Table 2

Bone characteristics of the study population according to gender

VariablesMale (n=174)Female (n=158)p Value
Lumbar spine BMD1.05 (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 BMD1.01 (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 BMD0.93 (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 MRI28 (17.1%)13 (9.4%)0.050
Lumbar inflammatory lesions on spine MRI24 (14.6%)13 (9.2%)0.148
  • BMD, bone mineral density.