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