Table 4.
Independent variables | Univariable analysis | Multivariable analysis | ||
---|---|---|---|---|
coeff (IC) | p | coeff (IC) | p | |
Female sex | −0.80 (−2.55, 0.93) | 0.359 | – | – |
LBP onset age | 0.21 (0.11, 0.30) | 0.000 | 0.19 (0.09, 0.29) | 0.000 |
Duration of LBP | 0.02 (−0.12, 0.16) | 0.770 | – | – |
HLA-B27+ | −0.72 (−2.5, 1.08) | 0.428 | – | – |
Increased ESR/CRP | 0.97 (−0.80, 2.75) | 0.278 | – | – |
BASDAI > = 4 | −0.48 (−2.22, 1.26) | 0.583 | – | – |
Use of NSAIDs | 2.63 (−0.22, 5.48) | 0.070 | 1.22 (−1.46, 3.90) | 0.367 |
SPARCC SIJ >2 | 0.91 (−0.84, 2.55) | 0.233 | – | – |
LBP, low back pain; HLA-B27, human leukocyte antigen B27; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; BASDAI, bath ankylosing spondylitis disease activity index; NSAIDs, non-steroidal antiinflammatory drugs; SPARCC, spondyloarthritis research consortium of Canada; SIJ, sacroiliac joints; mSASSS, modified Stoke ankylosing spondylitis spinal score (SASSS) system; T24, 24 months.