| Daytime hours (0800–1659) (n = 2656) | Nighttime hours (1700–0759) (n = 3367) | P value |
---|---|---|---|
Number of RRT activations during admission, median (IQR) | 1 (1–1) | 1 (1–1) | 0.24 |
Patients with multiple RRT activations during admission, n (%) | 473 (17.8) | 629 (18.7) | 0.38 |
RRT activations/1000 admissions | 21.5 | 19.3 | 0.12 |
Most recent vital signs | |||
 Systolic blood pressure, mmHg, mean (SD) | 121 (29) | 124 (32) | 0.11 |
 Diastolic blood pressure, mmHg, mean (SD) | 70 (15) | 71 (16) | 0.05 |
 Heart rate, beats/minute, mean (SD) | 98 (30) | 102 (30) | < 0.001 |
 Temperature, °C, mean (SD) | 36.8 (0.7) | 36.8 (0.7) | 0.28 |
 Oxygen saturation, %, mean (SD) | 94 (5) | 94 (5) | 0.66 |
Most recent laboratory values | |||
 White blood cell count, ×109/L, median (IQR) | 10.1 (7.1–14.4) | 10.7 (7.4–14.9) | < 0.01 |
 Hemoglobin, g/L, mean (SD) | 106.8 (22.9) | 108.1 (22.6) | 0.03 |
 Platelets, ×109/L, mean (SD) | 225.4 (126.6) | 229.6 (134.7) | 0.22 |
 Potassium, mmol/L, mean (SD) | 4.1 (0.7) | 4.1 (0.7) | 0.87 |
 Creatinine, μmol/L, median (IQR) | 83 (60–142) | 84 (60–142) | 0.48 |
 Urea, mmol/L, median (IQR) | 7.4 (4.7–12.9) | 7.6 (4.9–12.9) | 0.18 |
 Lactate, mmol/L, median (IQR) | 2.2 (1.7–3.1) | 2.2 (1.7–3.1) | 0.92 |
 Albumin, g/L, mean (SD) | 27.1 (6.8) | 26.9 (6.8) | 0.20 |
 INR, median (IQR) | 1.2 (1.1–1.4) | 1.2 (1.1–1.4) | 0.62 |
Reason for call, n (%) | < 0.001 | ||
 Respiratory distress | 604 (22.7) | 927 (27.5) |  |
 Tachycardia/bradycardia/arrhythmia | 395 (14.9) | 643 (19.1) |  |
 Altered level of consciousness | 485 (18.3) | 537 (15.9) |  |
 Hypotension | 356 (13.4) | 388 (11.5) |  |
 Hypertension | 40 (1.5) | 122 (3.6) |  |
 Airway concern | 90 (3.4) | 124 (3.6) |  |
 Seizure | 30 (1.1) | 30 (0.9) |  |
 Worried about patient | 336 (12.7) | 304 (9.1) |  |
 Other | 152 (5.7) | 152 (4.5) |  |
 Unknown | 168 (6.3) | 140 (4.1) |  |
Latency from concerning symptom/sign onset to RRT activation | < 0.001 | ||
 < 1 h | 2151 (81.0) | 2402 (73.2) |  |
 1–4 h | 437 (16.4) | 667 (20.3) |  |
 5–8 h | 11 (0.4) | 109 (3.3) |  |
 9–12 h | 8 (0.3) | 26 (0.8) |  |
 13–18 h | 6 (0.2) | 22 (0.7) |  |
 19–24 h | 4 (0.2) | 18 (0.6) |  |
 25–36 h | 4 (0.2) | 9 (0.3) |  |
 37–48 h | 2 (0.1) | 2 (0.1) |  |
  > 48 h | 33 (0.4) | 29 (0.9) |  |
RRT response time, minutes, median (IQR) | 5 (3–7) | 5 (3–7) | 0.74 |