Table 2.
Univariate analysis of preoperative risk factors
| Characteristics | With AKI (n=34) | AKI prevalence | p-value | Mean difference / odds ratio (95% CI) |
|---|---|---|---|---|
| Mean age in years With AKI (n=34): 71.1 (SD: 10.4) No AKI (n=379): 66.1 (SD: 10.8) |
0.009* | 0.5 (0.1–0.9) | ||
| Sex | Male (15/168) | 8.9% | 0.67** | |
| Female (19/245) | 7.8% | |||
| Preoperative renal impairment | No (25/361) | 6.9% | 0.025*** | 2.8 (1.2–6.4) |
| Yes (9/52) | 17.3% | |||
| Diabetes mellitus | No (29/355) | 8.2% | 0.80*** | |
| Yes (5/58) | 8.6% | |||
| ACEis/ARBs | No (19/263) | 7.2% | 0.32** | |
| Yes (15/150) | 10.0% | |||
| NSAIDs | No (22/276) | 8.0% | 0.78** | |
| Yes (12/137) | 8.8% | |||
| Diuretics | No (26/318) | 8.2% | 0.99** | |
| Loop (3/35) | 8.6% | |||
| Thiazide / potassium sparing (5/60) | 8.3% | |||
ACEis = angiotensin converting enzyme inhibitor; AKI = acute kidney injury; ARBs = angiotensin receptor blocker; CI = confidence interval; NSAIDs = non-steroidal anti-inflammatory drugs; SD = standard deviation
*t-test; **chi-squared test; ***Fisher’s exact test