Prevalence and risk factors of low bone mineral density in spondyloarthritis and prevalence of vertebral fractures

Table 3 Variables correlation with BMD in differents measurement sites using univariated analysis

	AP LS	p	Femoral neck	p	Total hip	p	Lateral LS	p
Age	0.11 ^a	0.31	−0.22 ^a	0.03	−0.003 ^a	0.97	−0.08 ^a	0.52
BMI	0.27 ^a	0.01	0.24 ^a	0.02	0.33 ^a	0.002	0.05^a	0.62
Disease duration	0.02 ^a	0.86	−0.17 ^a	0.13	−0.13 ^a	0.21	−0.02 ^a	0.84
Number of swollen joints	−0.20 ^a	0.06	−0.005 ^a	0.96	−0.10 ^a	0.34	−0.25 ^a	0.03
Number of tender joints	−0.22 ^a	0.04	−0.08 ^a	0.47	−0.12 ^a	0.25	−0.32 ^a	0.005
ESR	−0.0008 ^a	0.99	−0.08 ^a	0.44	−0.09 ^a	0.37	0.02 ^a	0.87
CRP	0.12 ^a	0.26	−0.05 ^a	0.63	0.05 ^a	0.67	0.13 ^a	0.28
Physician’s global assessement	−0.24 ^a	0.03	−0.20 ^a	0.06	−0.21 ^a	0.05	−0.25 ^a	0.04
% of days with NSAID intake	−0.003 ^a	0.97	−0.16 ^a	0.15	−0.11 ^a	0.31	0.07 ^a	0.57
Current vit D level	−0.15 ^a	0.16	−0.18 ^a	0.09	−0.23 ^a	0.03	−0.07 ^a	0.56
BASFI	−0.10 ^a	0.37	−0.22 ^a	0.04	−0.19 ^a	0.07	−0.10 ^a	0.41
BASDAI	−0.26 ^a	0.01	−0.17 ^a	0.10	−0.19 ^a	0.06	−0.29 ^a	0.01

^a:correlation coefficient [95% CI]; p, p value. BMD, Bone mineral density; AP, anterior-posterior; LS, lumbar spine; BMI, body mass index; ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; BASFI, bath ankylosing spondylitis functional index; BASDAI, bath ankylosing spondylitis disease activity index

ISSN: 1471-2474