Table 2.
Number of events (at least one readmission due to any reason and dehydration or death respectively) within 90 days after index surgery among the 3252 analysed participants
| Total N = 3252 |
Exposed N = 1173 |
Unexposed N = 2079 |
P | |
|---|---|---|---|---|
| Readmission due to any reason | 1232 of 3252 (37.9) | 520 of 1173 (44.3) | 712 of 2079 (34.2) | <0.001 |
| Readmission due to dehydration | 249 of 3252 (7.7) | 151 of 1173 (12.9) | 98 of 2079 (4.7) | <0.001 |
| Diagnosis of dehydration at readmission | 249 of 1232 (20.2) | 151 of 520 (29.0) | 98 of 712 (13.8) | <0.001 |
| ICD-10 code for volume depletion or electrolyte imbalance | 217 of 249 (87.1) | 126 of 151 (83.4) | 91 of 98 (92.9) | <0.001 |
| ICD10 code for acute renal failure | 68 of 249 (27.3) | 58 of 151 (38.4) | 10 of 98 (10.2) | <0.001 |
| 90-day mortality | 19 of 3253 (0.6) | 6 of 1173 (0.5) | 13 of 2079 (0.6) | 0.813 |
Variables are reported as frequency (proportion). Exposed was defined as at least two dispensations of ACEI, ARB or diuretics within 365 days prior to index surgery. ACEI, angiotensin-converting enzyme inhibitors; ARB, angiotensin II receptor blockers.