Correlation of Psoas Muscle Index with Fragility Vertebral Fracture: A Retrospective Cross-Sectional Study of Middle-Aged and Elderly Women

Table 1

Baseline data.

	Osteoporosis (n = 89)	Nonosteoporosis (n = 95)	t/chi-square value	value
Age (y)	71.0 ± 6.8	70.0 ± 8.0	0.928	0.355
Age of menopause (y)	49.3 ± 3.3	48.5 ± 4.2	1.330	0.185
Height (m)	1.57 ± 0.05	1.59 ± 0.06	−2.520	0.013
Weight (kg)	57.7 ± 8.5	65.3 ± 9.2	−5.802	<0.001
Body mass index (kg/m^2)	23.3 ± 3.3	25.7 ± 3.8	−4.663	<0.001
Right psoas muscle area (mm^2)	446 ± 140	501 ± 142	−2.671	0.008
Left psoas muscle area (mm^2)	444 ± 114	520 ± 146	−3.915	<0.001
PMI (mm^2/m^2)	360.0 ± 98.5	403.0 ± 111.0	−2.773	0.006
L1 BMD (g/cm^2)	0.726 ± 0.098	0.943 ± 0.140	−12.085	<0.001
L2 BMD (g/cm^2)	0.745 ± 0.107	1.014 ± 0.142	−14.452	<0.001
L3 BMD (g/cm^2)	0.803 ± 0.125	1.082 ± 0.151	−13.592	<0.001
L4 BMD (g/cm^2)	0.836 ± 0.154	1.109 ± 0.141	−12.505	<0.001
Femoral neck BMD (g/cm^2)	0.638 ± 0.108	0.788 ± 0.104	−9.573	<0.001
Femoral trochanter BMD (g/cm^2)	0.534 ± 0.097	0.664 ± 0.097	−9.100	<0.001
T-score (SD)	−3.4 ± 0.7	−1.3 ± 0.9	−17.213	<0.001
Vertebral fracture	57 (64.0)	50 (52.6)	2.460	0.117
Humerus fracture	1 (1.1)	0	1.073	0.484
Forearm fracture	3 (3.4)	3 (3.2)	0.007	1.000
Femur fracture	3 (3.4)	2 (2.1)	0.278	0.674
Patella fracture	2 (2.2)	0	2.158	0.233