Table 1.
Anthropometric and biochemical variables in bariatric-surgery and control groups
| Mean ± sd (range) |
P value | ||
|---|---|---|---|
| Bariatric surgery, n = 48 | Control, n = 50 | ||
| Age (yr) | 42.7 ± 9.7 (25–59) | 39.7 ± 7.4 (26–55) | 0.081 |
| Height (cm) | 163 ± 6 (150–174) | 165 ± 6 (153–177) | 0.136 |
| Weight (kg) | 140.2 ± 37.2 (91.8–251.8) | 76.3 ± 15.8 (45.0–115.3) | <0.0001 |
| BMI (kg/m2) | 52.3 ± 12.5 (35.0–90.2) | 28.1 ± 5.9 (16.7–43.0) | <0.0001 |
| s25D (ng/ml) | 16 ± 8 (3–42) | 23 ± 10 (8–54) | <0.0001 |
| sPTH (pg/ml)a | 44.4 ± 34 (11.5–215.0) | 25.6 ± 9 (10.2–54.1) | <0.0001 |
| s1,25D (pg/ml) | 39 ± 19 (13–107) | 24 ± 17 (3–73) | <0.0001 |
| sBAP (ng/ml) | 19 ± 5 (11–34) | 12 ± 4 (5–20) | <0.0001 |
| sNTX (nm bone collagen equivalents) | 9.6 ± 3.2 (3.3–22.1) | 7.9 ± 2.8 (4.5–16.4) | 0.007 |
| sCa (mg/dl)a | 8.92 ± 0.44 (8.0–10.0) | 8.78 ± 0.34 (8.1–9.4) | 0.079 |
| sPi (mg/dl) | 3.45 ± 0.52 (2.2–4.7) | 3.24 ± 0.52 (2.3–4.5) | 0.043 |
| sCr (mg/dl) | 1.05 ± 0.24 (0.7–1.9) | 0.87 ± 0.11 (0.7–1.1) | <0.0001 |
a
When the outlier PTH = 215 was removed, significance of difference between control and bariatric-surgery women changed only for sCa, with control sCa lower than bariatric-surgery group; P = 0.042.