Table 1.
Baseline Characteristics of Patients Undergoing Laparoscopic or Open Bariatric Stapling Procedures, State Inpatient Databases for 12 States, 2010
| Lowest caseloads, 67 hospitals |
Medium caseloads, 65 hospitals |
Highest caseloads, 66 hospitals |
Total, 198 hospitals |
|
|---|---|---|---|---|
| Caseload, mean (SD) | 56.4 (21.8) | 119.7 (21.3) | 298.2 (162.7) | 157.8 (140.1) |
| n | 3,781 | 7,780 | 19,679 | 31,240 |
| Patient demographics, n (%) |
||||
| Age, y, mean (SD) | 43.7 (11.3) | 44.9 (11.7) | 44.7 (11.6) | 44.6 (11.6) |
| Female | 2931 (77.6) | 6011 (77.8) | 15349 (78.4) | 24291 (78.2) |
| Non-white race | 1058 (30.5) | 2002 (30.2) | 5284 (32) | 8344 (31.3) |
| Medicare insurance | 401 (10.6) | 969 (12.5) | 2144 (10.9) | 3514 (11.2) |
| Procedure types, n (%) | ||||
| Laparoscopic gastric bypass |
3133 (82.9) | 6882 (88.5) | 18225 (92.6) | 28240 (90.4) |
| Open gastric bypass | 373 (9.9) | 614 (7.9) | 938 (4.8) | 1925 (6.2) |
| Other bariatric procedure |
275 (7.3) | 284 (3.7) | 516 (2.6) | 1075 (3.4) |
| Comorbidities, n (%)* | ||||
| Hypertension | 2021 (53.5) | 4245 (54.6) | 10848 (55.1) | 17114 (54.8) |
| Congestive heart failure | 38 (1.0) | 89 (1.1) | 216 (1.1) | 343 (1.1) |
| Diabetes | ||||
| Without chronic complications |
1110 (29.4) | 2420 (31.1) | 6090 (30.9) | 9620 (30.8) |
| With chronic complications |
59 (1.6) | 171 (2.2) | 381 (1.9) | 611 (2.0) |
| Chronic pulmonary disease |
669 (17.7) | 1358 (17.5) | 3630 (18.4) | 5657 (18.1) |
| Liver disease | 349 (9.2) | 780 (10) | 2691 (13.7) | 3820 (12.2) |
| Hypothyroidism | 364 (9.6) | 778 (10) | 1884 (9.6) | 3026 (9.7) |
| Depression | 807 (21.3) | 1605 (20.6) | 3505 (17.8) | 5917 (18.9) |
| Psychoses | 92 (2.4) | 166 (2.1) | 443 (2.3) | 701 (2.2) |
| Fluid and electrolyte disorders |
195 (5.2) | 214 (2.8) | 353 (1.8) | 762 (2.4) |
| Deficiency anemias | 149 (3.9) | 288 (3.7) | 826 (4.2) | 1263 (4) |
| Other neurologic disorders |
60 (1.6) | 114 (1.5) | 273 (1.4) | 447 (1.4) |
| Coagulopathy | 20 (0.5) | 33 (0.4) | 83 (0.4) | 136 (0.4) |
| Peripheral vascular disease |
14 (0.4) | 35 (0.4) | 88 (0.4) | 137 (0.4) |
| Postoperative outcomes† | ||||
| Any complication | 258 (6.8) | 449 (5.8) | 973 (4.9) | 1680 (5.4) |
| Serious complications | 77 (2.0) | 175 (2.2) | 296 (1.5) | 548 (1.8) |
| Reoperation | 36 (1.0) | 56 (0.7) | 144 (0.7) | 236 (0.8) |
| Pulmonary complications |
55 (1.5) | 74 (1.0) | 131 (0.7) | 260 (0.8) |
| Cardiac complications | 28 (0.7) | 52 (0.7) | 118 (0.6) | 198 (0.6) |