Table 1.
Participants’ characteristics
| Characteristic | Gastrectomy | Control | P value |
| Number of participants | 50 | 56 | – |
| Number of participants with metabolite profiles | 44 | 54 | – |
| Gastrectomy type | |||
| Total gastrectomy (n) | 12 | – | – |
| Subtotal gastrectomy (n) | 38 | – | – |
| Gastrectomy reconstruction (n) | |||
| Stomach-stomach anastomosis | 1 | – | – |
| Billroth I | 2 | – | – |
| Jejunal interposition | 6 | – | – |
| Pylorus-preserving gastrectomy | 8 | – | – |
| Roux-en-Y | 29 | – | – |
| Time since surgery (median (range) in years) | 5 (1–20) | – | – |
| Age | 61.6±10.7 | 64.0±11.2 | 0.205 |
| Body mass index (kg/m2) | 20.6±2.6 | 23.2±3.0 | 1.22×10-5 |
| Smokers, n (%) | 3 (6.0) | 5 (14.3) | 0.479 |
| Gender (F/M) | 16/34 | 23/33 | 0.420 |
| Alcohol consumption (>60 g/day), n (%) | 22 (44.0) | 31 (55.4) | 0.331 |
| Serum glucose (mg/dL) | 101.2±12.5 | 104.6±15.6 | 0.147 |
| Total cholesterol (mg/dL) | 190.4±25.7 | 209.0±35.8 | 0.0145 |
| Medications | |||
| Diabetes, n (%) | 2 (4.2) | 12 (21.8) | 0.00889 |
| High blood pressure, n (%) | 13 (26.0) | 17 (30.4) | 0.743 |
| Cholesterol, n (%) | 6 (12.0) | 10 (17.9) | 0.502 |
| Gout, n (%) | 0 (0) | 2 (3.6) | 0.497 |
| Gastric acid suppression, n (%) | 4 (8.0) | 13 (23.2) | 0.0375 |
| Analgesic, n (%) | 1 (2.0) | 2 (3.6) | 1.000 |
| Anticoagulant, n (%) | 4 (8.0) | 4 (7.1) | 1.000 |
| Other, n (%) | 8 (16.0) | 17 (30.9) | 0.108 |
Statistical test performed: Mann-Whitney U test for numerical data and Fisher’s exact test for categorical data; n, number of participants.
F, female; M, male.