Table 1. Characteristics of the population (201 patients).
| Characteristics | Mean value±s.d. |
|---|---|
| Age, years | 66.63±12.49 |
| Weight, kg | 72.35±14.54 |
| Height, cm | 164.06±9.13 |
| BMI, kg/m2 | 26.73±5.1 |
| BMD total hip, g/cm2 | 0.897±0.154 |
| T-score total hip, s.d. | −0.72±1.01 |
| BMD femoral neck, g/cm2 | 0.738±0.14 |
| T-score femoral neck, s.d. | −1.30±1.05 |
| BMD lumbar spine, g/cm2 | 0.958±0.163 |
| T-score lumbar spine, s.d. | −1.09±1.45 |
| Albumin, g/l (nl: 40–47) | 42.36±5.01 |
| Calcium, mmol/l (nl: 2.10–2.43) | 2.33±0.11 |
| Creatinine, μmol/l (nl: 64–104) | 77.31±24.79 |
| 25-Hydroxyvitamin D, nmol/l (nl: 75–250) | 55.47±28.48 |
| PTH, pg/ml (nl: 15–65) | 38.06±24.08 |
| β2 Microglobulin, mg/l (nl: 1.20–2.50) | 2.22±0.98 |
| LDH, UI/l (nl: 125–220) | 278.51±108.75 |
| CTX, ng/ml | 0.64±1.31 |
| BALP, UI/l (nl: 5.5–24.6) | 13.75±8.89 |
| Marrow plasma cells (%) | 3.3±2.33 |
| Peak value, g/l | 5.9±4.8 |
| IgA | 4.2±3.6 |
| IgG | 6.3±5.3 |
| IgM | 5.9±4.3 |
| Double peak | 7.2±6.4 |
| Categorical variables | |
| Women | 97 (48.3%) |
| α Heavy chain | 21 (10.4%) |
| γ Heavy chain | 104 (51.7%) |
| μ Heavy chain | 67 (33.3%) |
| Double heavy chain isotype | 9 (4.5%) |
| κ Light chain | 129 (64.2%) |
| λ Light chain | 63 (31.3%) |
| Double light chain isotype | 9 (4.5%) |
Abbreviations: BALP, bone-alkaline phosphatase; BMD, bone mineral density; BMI, body mass index; CTX, C-terminal telopeptide of collagen-1; Ig, immunoglobulin; LDH, lactate dehydrogenase; nl, normal; PTH, parathormone.