Table 2.
General characteristics according RRT during ICU stay before and after propensity-scoring matching
| Characteristic | Before Matching | After Matching | ||||
|---|---|---|---|---|---|---|
| No RRT (n=17,878) | RRT (n=532) | P | No RRT (n=502) | RRT (n=502) | P | |
| Age (yr) | 63.9±17.6 | 64.1±15.5 | 0.73 | 64.8±17.2 | 64.5±15.2 | 0.87 |
| Men | 10,116 (56.6) | 318 (59.8) | 0.21 | 302 (60.2) | 299 (59.6) | 0.98 |
| Hypertension | 6032 (33.7) | 71 (13.3) | <0.001 | 128 (25.5) | 66 (13.1) | <0.001 |
| Diabetes mellitus | 3473 (19.4) | 114 (21.4) | 0.25 | 107 (21.3) | 107 (21.3) | 1.00 |
| Congestive heart failure | 3405 (19.0) | 217 (40.8) | <0.001 | 197 (39.2) | 203 (40.4) | 0.70 |
| COPD | 3018 (16.9) | 78 (14.7) | 0.18 | 86 (17.1) | 78 (15.5) | 0.49 |
| Liver disease | 830 (4.6) | 70 (13.2) | <0.001 | 64 (12.7) | 64 (12.7) | 1.00 |
| Solid tumors | 2737 (15.3) | 43 (8.1) | <0.001 | 44 (8.8) | 43 (8.6) | 0.91 |
| Lymphoma | 280 (1.6) | 10 (1.9) | 0.57 | 12 (2.4) | 10 (2.0) | 0.67 |
| Metastatic cancer | 813 (4.5) | 10 (1.9) | 0.003 | 8 (1.6) | 10 (2.0) | 0.63 |
| Sepsis | 1868 (10.4) | 219 (41.9) | <0.001 | 188 (37.5) | 194 (38.6) | 0.70 |
| SAPS on ICU admission | 14 (10–17) | 18 (13–22) | <0.001 | 17 (12–21) | 18 (13–21) | 0.48 |
| SOFA on ICU admission | 5 (2–8) | 10 (7–14) | <0.001 | 10 (6–13) | 10 (6–14) | 0.62 |
| Hyperkalemia | 1399 (7.8) | 205 (38.5) | <0.001 | 164 (32.7) | 190 (37.8) | 0.22 |
| Azotemia (BUN>60 mg/dl) | 1456 (8.1) | 319 (60.0) | <0.001 | 289 (57.6) | 290 (57.8) | 0.95 |
| Cumulative fluid balance > 5% body wt | 7035 (53.5) | 324 (76.8) | <0.001 | 312 (76.1) | 299 (75.5) | 0.84 |
| Hyponatremia | 4930 (27.6) | 322 (60.5) | <0.001 | 273 (54.4) | 289 (57.6) | 0.50 |
| Urine output <400 ml/24 h | 4150 (23.7) | 414 (84.8) | <0.001 | 360 (71.7) | 375 (74.7) | 0.95 |
| Metabolic acidosis | 12,352 (69.1) | 476 (89.5) | <0.001 | 436 (89.2) | 446 (88.8) | 0.38 |
| Alkali therapy | 955 (5.3) | 182 (34.2) | <0.001 | 161 (32.1) | 158 (31.5) | 0.84 |
| Diuretic use during ICU stay | 7463 (41.7) | 259 (48.7) | 0.001 | 228 (45.4) | 243 (48.4) | 0.38 |
Data are expressed as the mean±SD, n (%), or median (interquartile range). Alkali and diuretic therapy were considered only if administered before RRT.