Table 1 Baseline characteristics of MrOs sample (n = 475)
| Â | Full sample mean (SD) | Stratified by BMI mean (SD) | ||
|---|---|---|---|---|
|  |  | BMI < 30 (n = 399) | BMI ≥30 (n = 76) | p-value for differencea |
Age (years) | 74.2 (5.86) | 74.7 (5.86) | 71.6 (5.09) | <.001 |
Cobb angle of kyphosis (degrees) | 37.5 (11.90) | 37.9 (12.0) | 35.2 (11.3) | .07 |
Height (cm) | 173.6 (6.97) | 173.7 (7.19) | 172.9 (5.72) | .28 |
Total hip BMD (g/cm2) | 0.94 (0.14) | 0.92 (0.14) | 1.01 (0.13) | <.001 |
BMI (kg/m2) | 26.8 (3.21) | 25.8 (2.37) | 32.0 (1.54) | <.001 |
Prevalent vertebral fracture (% yes) | 9.68 | 10.5 | 5.26 | 0.16 |
Total paraspinal muscle volume (cm3) | 18.6 (3.79) | 18.7 (3.69) | 18.0 (4.28) | 0.15 |
Paraspinal muscle volume (cm3) | 12.1 (3.47) | 12.3 (3.42) | 11.4 (3.64) | 0.04 |
Paraspinal muscle attenuation (HU) | 43.6 (5.48) | 43.5 (5.40) | 43.9 (5.91) | 0.57 |
Paraspinal adipose tissue volume (cm3) | 6.41 (2.61) | 6.36 (2.65) | 6.62 (2.37) | 0.43 |
Total psoas muscle volume (cm3) | 11.1 (2.65) | 11.1 (2.58) | 10.7 (2.98) | 0.15 |
Psoas muscle volume (cm3) | 10.0 (3.16) | 10.2 (2.99) | 8.82 (3.76) | .003 |
Psoas muscle attenuation (HU) | 51.53 (5.13) | 51.64 (5.43) | 50.98 (3.05) | 0.14 |
Psoas adipose tissue volume (cm3) | 1.07 (0.91) | 0.92 (0.77) | 1.85 (1.15) | < .001 |
Total abdominal muscle volume (cm3) | 63.9 (8.11) | 63.5 (7.82) | 65.8 (9.29) | .048 |
Abdominal muscle volume (cm3) | 48.3 (10.3) | 48.9 (9.82) | 45.2 (12.0) | .01 |
Abdominal muscle attenuation (HU) | 45.79 (4.36) | 45.84 (4.54) | 45.56 (3.30) | 0.53 |
Abdominal adipose tissue volume (cm3) | 15.6 (6.01) | 14.6 (5.50) | 20.6 (6.14) | < .001 |