Table 1.
Characteristics of the study population and comparison of characteristics between RYGB and SG groups
| Variable | ALL (n=760) | RYGB (n=259) | SG (n=501) | p-value |
|---|---|---|---|---|
| Demographics | ||||
| Age, years | 42.00 (16.00) | 46.00 (15.00) | 40.00 (16.00) | <0.0001 |
| Height, cm | 170.00 (12.00) | 170.00 (11.00) | 170.00 (12.00) | 0.60 |
| Weight, kg | 130.00 (30.00) | 131.00 (30.50) | 130.00 (29.00) | 0.11 |
| BMI, kg/m2 | 46.00±6.52 | 46.36±6.65 | 45.81±6.44 | 0.12 |
| Gender | ||||
| Women | 509 (66.71) | 162 (62.55) | 347 (69.26) | 0.06 |
| Men | 251 (32.90) | 97 (37.45) | 154 (30.74) | 0.06 |
| Comorbidities | ||||
| HTN | 503 (65.92) | 193 (74.52) | 310 (61.88) | 0.0005 |
| Heart disease | 49 (6.42) | 23 (8.88) | 26 (5.19) | 0.05 |
| T2DM | 260 (34.08) | 140 (54.05) | 120 (23.95) | <0.0001 |
| Metabolic syndrome | 580 (76.02) | 189 (72.97) | 391 (78.04) | 0.12 |
| Hyperlipidemia | 309 (40.50) | 148 (57.14) | 161 (32.14) | <0.0001 |
| Kidney disease | 7 (0.92) | 3 (1.16) | 4 (0.80) | <0.0001 |
| Liver disease | 88 (11.53) | 35 (13.51) | 53 (10.58) | 0.22 |
| OSA | 92 (12.06) | 39 (15.06) | 53 (10.58) | 0.07 |
| PCOS | 30 (3.93) | 8 (3.09) | 22 (4.39) | <0.0001 |
| GERD | 64 (8.39) | 32 (12.36) | 32 (6.39) | 0.005 |
| Arthritis | 151 (19.79) | 52 (20.08) | 99 (19.76) | 0.92 |
| Perioperative data | ||||
| Preoperative WL, kg | 4.00 (8.00) | 5.00 (10.00) | 3.00 (8.00) | 0.04 |
| Time of the procedure, min | 110.00 (60.00) | 135.00 (70.00) | 95.00 (45.00) | <0.0001 |
| LOS, days | 4.00 (2.00) | 4.00 (2.00) | 4.00 (2.00) | 0.03 |
Data are shown as mean ± standard deviation or median (interquartile range) for continuous variables and as number (percentage) for categorical variables
p-values refer to the comparison between RYGB and SG groups with the use of an independent t test or Mann–Whitney U test for continuous variables and Chi-square test with Fisher’s correction for categorical variables
Embolden p-values indicate statistically significant result
Abbreviations: RYGB Roux-en-Y gastric bypass, SG sleeve gastrectomy, BMI body mass index, HTN hypertension, T2DM type 2 diabetes mellitus, OSA obstructive sleep apnea, PCOS polycystic ovary syndrome, GERD gastroesophageal reflux disease, WL weight loss, LOS length of hospital stay, EWL excess weight loss, EBMIL excess body mass index loss