Table 1.
Baseline characteristics of study participants
| Surgery group (n = 2003) | Control group (n = 2030) | P-value | |
|---|---|---|---|
| Age (years) | 47.2 ± 5.9 | 48.7 ± 6.3 | <0.001 |
| Female sex (%) | 70.8 | 71.2 | 0.781 |
| Height (cm) | 169 ± 9.1 | 169 ± 9.2 | 0.655 |
| Weight (kg) | 121 ± 17 | 115 ± 17 | <0.001 |
| Body mass index (kg/m2) | 42.4 ± 4.5 | 40.1 ± 4.7 | <0.001 |
| Waist circumference (cm) | 126 ± 11 | 120 ± 11 | <0.001 |
| Waist/hip ratio | 0.99 ± 0.08 | 0.98 ± 0.07 | <0.001 |
| Systolic blood pressure (mmHg) | 145 ± 19 | 138 ± 18 | <0.001 |
| Diastolic blood pressure (mmHg) | 90 ± 11 | 85 ± 11 | <0.001 |
| Total cholesterol (mmol/L) | 5.86 ± 1.12 | 5.61 ± 1.06 | <0.001 |
| Apo B/Apo A1 ratio | 0.94 ± 0.28 | 0.91 ± 0.28 | <0.001 |
| Blood glucose (mmol/L) | 5.18 ± 2.01 | 4.93 ± 1.81 | <0.001 |
| Insulin (mU/L) | 21.6 ± 13.7 | 18.0 ± 11.3 | <0.001 |
| Creatinine (µmol/L) | 69.2 ± 8.8 | 69.5 ± 9.5 | 0.238 |
| Free thyroxine (pmol/L) | 15.6 ± 3.7 | 15.6 ± 3.6 | 0.634 |
| Thyroid-stimulating hormone (mIU/L) | 2.01 ± 2.34 | 2.04 ± 2.66 | 0.671 |
| Hypertension (%) | 78.4 | 63.7 | <0.001 |
| Diabetes (%) | 17.2 | 12.7 | <0.001 |
| Smoking (%) | 25.8 | 20.9 | <0.001 |
| Alcohol intake (g/daily) | 5.2 ± 7.3 | 5.3 ± 8.0 | 0.715 |
Values are means ± SD or %.