Table 1.
Baseline characteristics
| Characteristics | Overall cohort | Hospital A | Hospital B | Hospital C | Hospital D | p-value |
|---|---|---|---|---|---|---|
| Number of total admissions, n | 55,083 | 8754 | 18,214 | 9,020 | 19,095 | – |
| Number of observation sets, n | 2,855,679 | 363,765 | 837,466 | 254,342 | 1,400,106 | – |
| Age, y, mean ± SD | 60.06 ± 15.95 | 60.77 ± 16.71 | 59.76 ± 16.01 | 62.58 ± 15.22 | 58.80 ± 15.73 | < 0.001 |
| Length of stay, mean ± SD | 5.81 ± 11.53 | 7.02 ± 21.39 | 4.70 ± 5.61 | 8.61 ± 14.30 | 5.00 ± 6.40 | < 0.001 |
| Male, sex, n (%) | 26,980 (48.98%) | 4,448 (50.81%) | 8,751 (48.04%) | 4,907 (54.40%) | 8,874 (46.47%) | < 0.001 |
| Variables within 24 h before outcome (IHCA or UIT) patients, mean ± SD | ||||||
| SBP (mmHg) | 116.17 ± 28.82 | 117.40 ± 29.89 | 115.25 ± 27.73 | 114.19 ± 24.26 | 117.14 ± 31.54 | < 0.05 |
| DBP (mmHg) | 68.16 ± 17.02 | 68.07 ± 17.06 | 66.90 ± 17.14 | 69.80 ± 15.38 | 69.60 ± 17.57 | < 0.001 |
| HR (/min) | 98.62 ± 23.64 | 96.93 ± 24.43 | 98.99 ± 22.46 | 101.48 ± 25.16 | 98.83 ± 24.07 | < 0.001 |
| RR (/min) | 21.69 ± 6.60 | 20.97 ± 4.81 | 21.59 ± 7.90 | 22.61 ± 5.16 | 22.63 ± 6.67 | < 0.001 |
| BT (°C) | 37.03 ± 0.95 | 37.11 ± 1.11 | 36.97 ± 0.85 | 36.82 ± 0.63 | 37.18 ± 0.96 | < 0.001 |
| SpO2 (%) | 95.72 ± 4.61 | 96.10 ± 4.65 | 95.40 ± 4.43 | 95.44 ± 5.14 | 96.17 ± 4.63 | < 0.001 |
| Lactic acid (mmol/L) | 4.05 ± 3.79 | 4.44 ± 4.46 | 3.60 ± 2.45 | 3.62 ± 3.41 | 3.81 ± 3.00 | 0.39 |
| pH | 7.37 ± 0.12 | 7.38 ± 0.11 | 7.37 ± 0.10 | 7.38 ± 0.13 | 7.34 ± 0.13 | < 0.05 |
| PaCO2 (mmHg) | 39.04 ± 15.43 | 40.26 ± 13.80 | 40.27 ± 23.99 | 37.42 ± 12.87 | 41.06 ± 14.92 | 0.15 |
| PaO2 (mmHg) | 106.61 ± 64.52 | 113.22 ± 80.55 | 104.33 ± 55.00 | 107.47 ± 56.74 | 91.83 ± 52.71 | 0.08 |
| TCO2 (mEq/L) | 21.85 ± 5.76 | 20.38 ± 4.40 | 22.19 ± 5.25 | 22.58 ± 6.60 | 21.91 ± 5.37 | < 0.01 |
| Number of admissions with outcomes (n) | ||||||
| IHCA/1000 adm | 0.90 (50) | 1.71 (15) | 0.71 (13) | 1.66 (15) | 0.36 (7) | – |
| UIT/1000 adm | 6.44 (355) | 12.67 (111) | 5.32 (97) | 7.09 (64) | 4.34 (83) | – |
| Borderline/1000 adm | 15.70 (865) | 23.41 (205) | 12.29 (224) | 26.05 (235) | 10.52 (201) | – |
| DNR suggestion/1000 adm | 1.01 (56) | 2.51 (22) | 0.49 (9) | 2.32 (21) | 0.20 (4) | – |