Table 4.
Correlation between DKK-1 levels and patients' clinical parameters.
| Correlation parameters tested with serum DKK-1 level | r | p |
|---|---|---|
| Age | 0.020 | 0.914 |
| BMI | 0.163 | 0.380 |
| Duration | −0.370 | 0.040∗ |
| ESR | 0.027 | 0.887 |
| CRP | −0.064 | 0.731 |
| ASDAS-ESR | −0.0004 | 0.998 |
| ASDAS-CRP | −0.044 | 0.814 |
| mSASSS | −0.110 | 0.626 |
| BMD at the lumbar spine | 0.103 | 0.649 |
| BMD at the femoral neck | 0.290 | 0.190 |
| BMD at the total hip | 0.467 | 0.028∗ |
DKK-1: dickkopf-related protein 1, BMI: body mass index, ESR: erythrocyte sedimentation rate, CRP: C-reactive protein, ASDAS: ankylosing spondylitis disease activity score, BMD: bone mineral density, and mSASSS: modified stoke ankylosing spondylitis spinal score; ∗indicates a significant value (p ≤ 0.05).