Table 1. Baseline characteristics of elderly patients (≥65 years) with and without acute kidney injury (n = 163).
| Characteristic | Total | Without AKI | With AKI | p1 value | p2 value | ||
|---|---|---|---|---|---|---|---|
| Stage 1 | Stage 2 | Stage 3 | |||||
| Age (years) | 80.3 ± 8.1 | 80.8 ± 8.1 | 79.9 ± 7.8 | 78.2 ± 8.1 | 79.5 ± 9.1 | 0.26 | 0.8 |
| Gender (male %) | 80 (49) | 44 (45) | 18 (55) | 8 (53) | 10 (63) | 0.12 | 0.85 |
| BMI (kg/m2) | 22.2 ± 5.2 | 21.8 ± 6.1 | 23 ± 3.6 | 23.6 ± 3.5 | 21.8 ± 2.4 | 0.36 | 0.73 |
| DM (%) | 65 (40) | 33 (34) | 16 (48) | 7 (47) | 9 (56) | 0.07 | 0.85 |
| Hypertension (%) | 92 (56) | 59 (60) | 19 (58) | 2 (13) | 12 (75) | 0.25 | <0.01 |
| CAD (%) | 12 (7) | 8 (8) | 2 (6) | 0 (0) | 2 (13) | 0.7 | 0.37 |
| LC (%) | 9 (6) | 3 (3) | 3 (9) | 1 (7) | 2 (13) | 0.08 | 0.86 |
| AMI (%) | 1 (1) | 0 (0) | 0 (0) | 0 (0) | 1 (6) | 0.21 | 0.23 |
| Heart failure (%) | 30 (18) | 15 (15) | 7 (21) | 3 (20) | 5 (31) | 0.16 | 0.7 |
| PAOD (%) | 12 (7) | 9 (9) | 2 (6) | 0 (0) | 1 (6) | 0.32 | 0.63 |
| COPD (%) | 18 (11) | 10 (10) | 6 (18) | 1 (7) | 1 (6) | 0.6 | 0.38 |
| CKD (%) | 40 (25) | 19 (19) | 6 (18) | 3 (20) | 12 (75) | 0.04 | <0.01 |
| RD (%) | 4 (2) | 1 (1) | 3 (9) | 0 (0) | 0 (0) | 0.13 | 0.24 |
| Malignancy (%) | 41 (25) | 21 (21) | 6 (18) | 9 (60) | 5 (31) | 0.13 | 0.01 |
| GI ulcer (%) | 18 (11) | 10 (10) | 3 (9) | 5 (33) | 0 (0) | 0.6 | 0.01 |
| Hemiplegia (%) | 5 (3) | 4 (4) | 1 (3) | 0 (0) | 0 (0) | 0.39 | 0.63 |
| Dementia/PD (%) | 22 (13) | 14 (14) | 6 (18) | 2 (13) | 0 (0) | 0.81 | 0.2 |
| Charlson’s index (with age) | 7.7 ± 2.4 | 7.4 ± 2.3 | 7.5 ± 2.5 | 8.8 ± 1.8 | 8.9 ± 2.4 | 0.03 | 0.02 |
| Charlson’s index (without age) | 3.1 ± 2.3 | 2.7 ± 2.3 | 2.9 ± 2.3 | 4.4 ± 2 | 4.4 ± 2.4 | <0.01 | <0.01 |
Data are expressed as mean ± standard deviation for continuous variables, and n (percentage) for categorical variables.
p1: Without AKI vs. With AKI, by independent Student’s t-test.
p2: KDIGO stage 1, stage 2, and stage 3, by one way ANOVA.
Abbreviations: AKI, acute kidney injury; AMI, acute myocardial infarction; BMI, body mass index; CAD, coronary artery disease; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; DM, diabetic mellitus; GI, gastrointestinal; LC, liver cirrhosis; PAOD, peripheral artery occlusive disease; PD, Parkinson’s Disease; RD, rheumatological disorder.