Table 1.
Baseline Characteristics
| Gastric Bypass, n = 11 | Gastric Banding, n = 8 | P value | |
|---|---|---|---|
| Age (y) | 53 ± 6 | 55 ± 13 | .755 |
| Gender (men/women) | 5 / 6 | 5 / 3 | .650 |
| Ethnicity (Caucasian/African-American/other) | 8/1/2 | 6/2/0 | .864 |
| Weight (kg) | 107 ± 18 | 107 ± 13 | .970 |
| BMI (kg/m2) | 37 ± 4 | 36 ± 3 | .528 |
| HgA1c (%) | 8.0 ± 1.5 | 7.9 ± 1.3 | .746 |
| Fasting glucose (mg/dL) | 139 ± 58 | 155 ± 64 | .568 |
| Creatinine (mg/dL) | 0.77 ± 0.15 | 0.76 ± 0.13 | .860 |
| Corrected calcium (mg/dL)a | 9.0 ± 0.3 | 9.1 ± 0.4 | .648 |
| Phosphorus (mg/dL) | 3.4 ± 0.7 | 3.4 ± 0.5 | .936 |
| 25-hydroxyvitamin D (ng/mL) | 21 ± 11 | 27 ± 15 | .261 |
| PTH (pg/mL) | 43 ± 11 | 40 ± 13 | .576 |
Data are presented as mean ± SD.
a
Corrected calcium = [0.8 × (4 − albumin (g/dL))] + serum calcium (mg/dL).