Table 3.
Comparison of bariatric-surgery group vs. control group during winter season (October to March)
| Mean ± sd (range) |
P value | ||
|---|---|---|---|
| Bariatric surgery, n = 15 | Control, n = 15 | ||
| Age (yr) | 41 ± 11 (25–58) | 40 ± 8 (28–55) | 0.91 |
| Height (cm) | 165 ± 6 (155–174) | 166 ± 7 (156–177) | 0.395 |
| Weight (kg) | 145.0 ± 41.0 (103.1–251.8) | 82.3 ± 13.3 (61.1–115.3) | <0.0001 |
| BMI (kg/m2) | 53.2 ± 12.3 (37.8–83.2) | 29.8 ± 5.2 (22.3–43.0) | <0.0001 |
| s25D (ng/ml) | 15 ± 8 (3.0–34.4) | 18 ± 8 (8.2–39.8)a | 0.267 |
| sPTH (pg/ml) | 46.2 ± 26.3 (19.8–102.0) | 23.3 ± 7.2 (10.2–41.5) | 0.003 |
| s1,25D (pg/ml) | 46 ± 23 (13–107) | 23 ± 16 (5.0–59) | 0.003 |
| sBAP (ng/ml) | 21 ± 5 (15–34) | 13 ± 5 (6–20) | <0.0001 |
| sNTX (nm bone collagen equivalents) | 8.6 ± 2.6 (3.9–13.8) | 7.5 ± 3.0 (4.5–16.4) | 0.285 |
| sCa (mg/dl) | 8.99 ± 0.51 (8.1–10.0) | 8.75 ± 0.28 (8.2–9.1) | 0.121 |
| sPi (mg/dl) | 3.31 ± 0.54 (2.2–4.3) | 3.22 ± 0.62 (2.4–4.5) | 0.667 |
| sCr (mg/dl) | 1.01 ± 0.20 (0.7–1.5) | 0.91 ± 0.11 (0.7–1.1) | 0.098 |
a
Significantly different by season, P = 0.01.