Table 1.
Baseline characteristics of patients included in the study
| Variable | AKI (n = 44) | Non-AKI (n = 204) | P-value |
|---|---|---|---|
| Demographic characteristics | |||
| Gender (male/female) (n, %) | 12 (27.3)/32 (72.7) | 54 (26.5)/150 (73.5) | 0.915 |
| Age (years)a | 79.0 ± 7.8 | 77.3 ± 6.9 | 0.153 |
| Length of hospital stay (days)a | 27.6 ± 6.8 | 19.7 ± 9.0 | 0.002* |
| Type of operation (n, %) | 0.015* | ||
| Bipolar hemiarthroplasty | 39 (83.0) | 158 (66.7) | |
| THR | 7 (14.9) | 41 (17.3) | |
| Osteosynthesis | 1 (2.1) | 38 (16.0) | |
| Comorbidities (n, %) | |||
| Hypertension | 25 (56.8) | 106 (51.9) | 0.560 |
| Diabetes mellitus | 23 (52.2) | 50 (24.5) | < 0.001* |
| Previous renal disease | 15 (34.1) | 25 (12.3) | < 0.001* |
| Previous heart disease | 8 (18.2) | 35 (17.2) | 0.775 |
| Medication history (n, %) | |||
| ACE inhibitor | 22 (50.0) | 68 (33.3) | 0.037* |
| NSAID | 5 (11.4) | 14 (6.9) | 0.311 |
| Contrast | 2 (4.6) | 26 (12.7) | 0.120 |
| Nephrotoxic antibiotics | 2 (4.6) | 2 (1.0) | 0.089 |
Abbreviations: ACE angiotensin-converting enzyme, AKI acute kidney injury, NSAID non-steroidal anti-inflammatory drug, THR total hip replacement
aValues are presented as mean ± standard deviation
*Statistically significant between the 2 groups (P < 0.05)