TABLE 1. Sample characterization.
| Variable | Pre-operative | 3 months PO | 6 months PO | 12 months PO |
| Sample (n) | 106 | 100 | 98 | 106 |
| Gender | ||||
| Female % (n) | 90.5 (96) | 90 (90) | 92.8 (91) | 90.5 (96) |
| Male % (n) | 9.5 (10) | 10 (10) | 7.2 (7) | 9.5 (10) |
| Age (years)* | 48 (20-64) | 48 (20-64) | 47 (20-64) | 48 (20-64) |
| Obesity history (years) | ||||
| ≤10 years | 32.1 (34) | NA | NA | NA |
| >10 years | 67.9 (72) | NA | NA | NA |
| Family medical history of obesity | ||||
| Yes % (n) | 87.7 (93) | NA | NA | NA |
| No % (n) | 12.3 (13) | NA | NA | NA |
| Family medical history of DM2 | ||||
| Yes % (n) | 75.5 (80) | NA | NA | NA |
| No % (n) | 24.5 (26) | NA | NA | NA |
| Comorbidities | ||||
| Two comorbidities % (n) | 38.7 (41) | 23 (23) | 13.2 (13) | 6.6 (7) |
| Three or more comorbidities % (n) | 61.3 (65) | NA | NA | NA |
*=values are expressed in median (minimum value-maximum value) descriptive statistics (software R); PO=postoperative; DM2=type 2 diabetes mellitus; NA=not applicable; %=percentage in relation to the sample; n = number of patients