eTable 3. Crude mortality rates stratified by patient characteristics.
| Cholecystectomy for cholelithiasis | Herniotomy for inguinal, femoral, umbilical, or abdominal hernia | |||||
|---|---|---|---|---|---|---|
| Total cases | Deaths | Crude mortality rate | Total cases | Deaths | Crude mortality rate | |
| Total | 731426 | 2957 | 0.40% | 1022882 | 1316 | 0.13% |
| Aged 65 years or over | 251600 | 2759 | 1.10% | 440502 | 1160 | 0.26% |
| Female | 482036 | 1540 | 0.32% | 208091 | 515 | 0.25% |
| Investigated comorbidities | ||||||
| Cardiac arrhythmia | 38510 | 1249 | 3.24% | 64552 | 468 | 0.72% |
| Heart failure/dilated cardiomyopathy | 24760 | 1282 | 5.18% | 34831 | 500 | 1.44% |
| Chronic ischemic heart disease | 40193 | 791 | 1.97% | 81071 | 306 | 0.38% |
| Hypertension (without heart or kidney failure) | 253206 | 1453 | 0.57% | 340294 | 574 | 0.17% |
| Aortic/mitral valve defects | 4376 | 130 | 2.97% | 8218 | 58 | 0.71% |
| Atherosclerosis of the extremities | 4452 | 159 | 3.57% | 8937 | 63 | 0.70% |
| Chronic lung disease | 33397 | 426 | 1.28% | 58210 | 213 | 0.37% |
| Chronic liver disease | 23262 | 321 | 1.38% | 11483 | 164 | 1.43% |
| Chronic pancreatitis | 1660 | 21 | 1.27% | 996 | 5 | 0.50% |
| Severe kidney disease | 4982 | 259 | 5.20% | 3911 | 62 | 1.59% |
| Chronic kidney failure | 27517 | 1068 | 3.88% | 31472 | 394 | 1.25% |
| Diabetes mellitus | 74777 | 1050 | 1.40% | 88723 | 307 | 0.35% |
| Obesity | 90887 | 259 | 0.28% | 76384 | 118 | 0.15% |
| Cachexia/malnutrition | 1392 | 72 | 5.17% | 1388 | 51 | 3.67% |
| Coagulation disorder | 16820 | 891 | 5.30% | 14260 | 265 | 1.86% |
| Peritoneal adhesions*1 | 86353 | 604 | 0.70% | – | – | – |
| Acute cholecystitis, cholangitis, or biliary pancreatitis | 242894 | 2295 | 0.94% | – | – | – |
| Malignant neoplasia*2 | – | – | – | 12687 | 122 | 0.96% |
*1As the case definition for herniotomy excludes cases with adhesiolysis (because it excludes concomitant bowel surgery), peritoneal adhesions are not included as a secondary diagnosis.
*2The case definition for cholecystectomy excludes cases with malignant neoplasia as a secondary diagnosis