TABLE 2. Food intake analysis.
| Variables | 3 months PO | 6 months PO | 12 months PO | 
| Energy (kcal/day) | |||
| Estimate | -1.028 | -0.909 | -0.698 | 
| Default error | 0.026 | 0.029 | 0.03 | 
| Exponential | 0.358 a | 0.403 b | 0.497 c | 
| Carbohydrate (g/day) | |||
| Estimate | -1.042 | -0.931 | -0.705 | 
| Default error | 0.032 | 0.036 | 0.037 | 
| Exponential | 0.353 a | 0.394 b | 0.494 c | 
| Protein (g/day) | |||
| Estimate | -39.930 a | -35.710 b | -28.280 c | 
| Default error | 3.084 | 3.291 | 3.337 | 
| Lipids (g/day) | |||
| Estimate | -1.336 | -1.146 | -0.929 | 
| Default error | 0.055 | 0.005 | 0.051 | 
| Exponential | 0.263 a | 0.318 b | 0.395 c | 
| Fiber (g/day) | |||
| Estimate | 0.677 a | 1.596 b | 4.939 c | 
| Default error | 0.378 | 0.396 | 0.539 | 
| Zinc (mg/day) | |||
| Estimate | -6.735 a* | -5.390 b | -4.832 b | 
| Default error | 0.824 | 0.824 | 0.824 | 
| Magnesium (mg/day) | |||
| Estimate | -0.49 | -0,405 | -0.232 | 
| Default error | 0.042 | 0.047 | 0.048 | 
| Exponential | 0.613 a | 0.667 b | 0.793 c | 
Statistical test used=mixed regression model; exponential corresponds to the exponential value of the estimate; different letters mean p<0.05; PO=postoperative; all postoperative data were compared with preoperative without adjustment; *when compared with the preoperative, value p> 0.05