Table 1.
Baseline characteristics
| Entire group except controls | RYGB | SG | BPD/DS | Control group | |
|---|---|---|---|---|---|
| Number of patients | 58,366 | 51,152 | 6781 | 433 | 583,660 |
| Age | 41.0 ± 11.1 | 40.9 ± 11.2 | 41.2 ± 10.7 | 37.8 ± 10.8 | 41.0 ± 11.1 |
| BMI | 42.0 ± 5.68 | 42.3 ± 5.42 | 39.4 ± 5.70 | 56.5 ± 6.78 | Unknown |
| Sex | |||||
| Women | 44,459 (76.2%) | 38,719 (75.7%) | 5488 (80.9%) | 252 (58.2%) | 444,590 (76.2%) |
| Men | 13,907 (23.8%) | 12,433 (24.3%) | 1293 (19.1%) | 181 (41.8%) | 139,070 (23.8%) |
| Comorbidity | |||||
| Hypertension | 14,459 (19.4%) | 13,012 (25.4%) | 1316 (19.4%) | 131 (30.3%) | 51,134 (8.8%) |
| Type 2 diabetes | 7978 (13.7%) | 7323 (14.3%) | 577 (8.5%) | 78 (18.0%) | 13,120 (2.2%) |
| Dyslipidemia | 5558 (9.5%) | 5053 (9.9%) | 461 (6.8%) | 44 (10.2%) | 24,457 (3.7%) |
| Depression | 8788 (15.1%) | 7582 (14.8%) | 1132 (16.7%) | 74 (17.1%) | 67,029 (11.5%) |
| Sleep apnea | 5650 (9.7%) | 5103 (10.0%) | 435 (6.4%) | 112 (25.9%) | Unknown |
| Previous kidney stones | 190 (0.3%) | 175 (0.3%) | 11 (0.2%) | 4 (0.9%) | 543 (0.1%) |
RYGB = Roux-en-Y gastric bypass; SG = sleeve gastrectomy; BPD/DS = biliopancreatic diversion with duodenal switch
Data on BMI and sleep apnea could not be obtained for the control group; otherwise, there were no missing data for any of the baseline characteristics