Table 3. Correlation between Serum DPP-4 Activity and Other Variables in Non-Obese Subjects (n=72).
| Variable | R | P value |
|---|---|---|
| Age, yr | -0.177 | 0.138 |
| Body mass index, kg/m2 | 0.045 | 0.707 |
| Systolic blood pressure, mm Hg | -0.094 | 0.433 |
| Diastolic blood pressure, mm Hg | 0.039 | 0.744 |
| Corrected calcium, mg/dL | 0.316 | 0.007 |
| Phosphate, mg/dL | 0.157 | 0.189 |
| Creatinine, mg/dL | -0.051 | 0.721 |
| Osteocalcin, ng/mL | -0.087 | 0.466 |
| C-telopeptide, ng/mL | 0.284 | 0.016 |
| Intact PTH, pg/mL | 0.221 | 0.062 |
| 25-Vitamin D3, ng/mL | 0.211 | 0.076 |
| BMD of spine, g/cm2 | 0.125 | 0.296 |
| BMD of femoral neck, g/cm2 | 0.102 | 0.395 |
| BMD of total hip, g/cm2 | 0.085 | 0.480 |
DPP-4, dipeptidyl peptidase 4; PTH, parathyroid hormone; BMD, bone mineral density.