Table 1.
Baseline characteristics
| Variable | Gastric bypass subjects | Control subjects | P |
|---|---|---|---|
| n | 16 | 16 | |
| Age (years)* | 44.4 (10.0) | 43.5 (11.7) | 0.82 |
| Female sex† | 13 (82) | 13 (82) | NA‡ |
| BMI (kg/m2)* | 38.0 (7.9) | 40.5 (6.9) | 0.36 |
| Weight (kg)* | 104.0 (29.0) | 114.6 (26.1) | 0.30 |
| Preoperative BMI (kg/m2)* | 51.5 (10.3) | — | — |
| Preoperative weight (kg)* | 141.1 (35.9) | — | — |
| Time elapsed after bypass (months)* | 17 (13.5) | — | — |
| Creatinine (µmol/L)* | 62.9 (9.8) | 65.2 (11.8) | 0.56 |
| Creatinine clearance (mL/min)* | 91.3 (25.7) | 95.7 (25.4) | 0.63 |
| A1C (%)* | 5.5 (0.3) | 5.6 (0.6) | 0.28 |
| Fasting glucose (mmol/L)* | 4.4 (0.4) | 5.1 (0.6) | 0.0006 |
| AST (units/L)* | 22.6 (5.4) | 25.3 (6.6) | 0.22 |
| Total cholesterol (mmol/L)* | 3.96 (0.69) | 4.78 (1.08) | 0.02 |
| Triglycerides (mmol/L)* | 1.0 (0.33) | 1.5 (0.88) | 0.29§ |
| HDL cholesterol (mmol/L)* | 1.1 (0.25) | 1.1 (0.38) | 0.74 |
| LDL cholesterol (mmol/L)* | 2.4 (0.53) | 3.0 (1.02) | 0.03 |
| Hypertension† | 8 (50) | 7 (43.8) | 1.0 |
| Type 2 diabetes† | 1 (6.3)‖ | 0 (0) | 1.0 |
| Dyslipidemia† | 1 (6.3) | 4 (0.25) | 0.33 |
| Hypothyroidism† | 3 (0.38) | 2 (0.13) | 1.0 |
| Sleep apnea† | 7 (43.8) | 4 (0.25) | 0.46 |
| Gastrointestinal reflux† | 1 (6.3) | 4 (0.25) | 0.33 |
*Data are mean (SD).
†Data are n (%).
‡Subjects were sex-matched.
§Mann-Whitney U statistic.
‖Diabetes in remission after RYGB.