Skip to main content

Table 1 Characteristics of the patients at first admission

From: Intensive care unit capacity and mortality in older adults: a three nations retrospective observational cohort study

Variable Israel (n = 10,847) USA (n = 35,875) Australia (n = 16,144) All (N = 62,866) p value
Age (years)      
 Mean ± SD
 Median (IQR)
85.36 ± 4.42
84 (82–88)
86.19 ± 4.67
85 (82–89)
85.75 ± 4.6
85 (82–89)
85.93 ± 4.62
85 (82–89)
 < 0.001
 Female (n, %) 6410 (59.1%) 20,801 (57.98%) 9745 (60.36%) 36,956 (58.8%)  < 0.001
Hospital length of stay (days)      
 Mean ± SD
 Median (IQR)
6.77 ± 8.35
4 (2–8)
6.09 ± 7.93
3 (5–7)
8.25 ± 9.16
5 (3–10)
6.76 ± 8.38
5 (3–8)
 < 0.001
 ICU admission rate 247 (2.28%) 8079 (22.52%) 417 (2.6%) 8743 (13.9%)  < 0.001
ICU length of stay (days)      
 Mean ± SD
 Median (IQR)
3.79 ± 5.94
2 (1–4)
3.48 ± 5.04
2.05 (1.15–3.87)
3.92 ± 10.51
2 (1–4)
3.49 ± 5.07
2.04 (1.14–3.88)
0.34
LAPS score      
 Mean ± SD
 Median (IQR)
28.98 ± 22.74
24 (11–42)
27.53 ± 19.81
24 (13–37)
22.51 ± 16.08
20 (11–31)
26.49 ± 19.63
23 (12–36)
 < 0.001
In-hospital death (n, %)      
 Ward
 ICU
 Total
725 (6.84%)
99 (40.08%)
824 (7.6%)
261 (0.94%)
1120 (13.86%)
1381 (3.85%)
689 (4.38%)
86 (20.62%)
775 (4.8%)
1675 (3.09%)
1305 (14.93%)
2980 (4.74%)
 < 0.001
Discharged home 9931 (91.6%) 15,408 (42.9%) 8388 (52.0%) 33,727 (53.65%)  < 0.001
Charlson comorbidity index      
 Mean ± SD
 Median (IQR)
5.37 ± 1.48
5 (4–6)
6.46 ± 2.24
6 (5–8)
4.93 ± 1.62
4 (4–5)
5.88 ± 2.09
5 (4–7)
 < 0.001
Patients readmitted in any department (n, %) 3085 (28.4%) 13,338 (37.2%) 4934 (30.6%) 21,357 (34.0%)  < 0.001
Days to first readmission in any department (median, IQR) 36 (12–85) 31 (10–75) 30 (4–85) 31 (9–78.5)  < 0.001
Primary diagnosis (n, %)  
 Abdominal pain 180 (1.66%) 155 (0.43%) 106 (0.66%) 441 (0.7%)  < 0.001
 Cholecystitis/cholangitis 109 (1%) 246 (0.69%) 57 (0.35%) 412 (0.7%)  < 0.001
 Acute kidney injury 107 (0.99%) 830 (2.31%) 167 (1.03%) 1104 (1.8%)  < 0.001
 Acute pancreatitis 69 (0.64%) 161 (0.45%) 92 (0.57%) 322 (0.5%) 0.03
 Acute respiratory failure 110 (1.01%) 218 (0.61%) 41 (0.25%) 369 (0.6%)  < 0.001
 URTI 69 (0.64%) 53 (0.15%) 26 (0.16%) 148 (0.2%)  < 0.001
 DVT PE 79 (0.73%) 329 (0.92%) 81 (0.5%) 489 (0.8%)  < 0.001
 Anemia 142 (1.31%) 50 (0.14%) 119 (0.74%) 311 (0.5%)  < 0.001
 Atrial fibrillation/flutter 247 (2.28%) 705 (1.97%) 288 (1.78%) 1240 (2.0%) 0.02
 Cellulitis 105 (0.97%) 429 (1.2%) 190 (1.18%) 724 (1.2%) 0.14
 Stroke and TIA 438 (4.04%) 909 (2.53%) 669 (4.14%) 2016 (3.2%)  < 0.001
 Heart failure 257 (2.37%) 2222 (6.19%) 588 (3.64%) 3067 (4.9%)  < 0.001
 Dizziness 85 (0.78%) 77 (0.21%) 70 (0.43%) 232 (0.4%)  < 0.001
 Fever 589 (5.43%) 89 (0.25%) 20 (0.12%) 698 (1.1%)  < 0.001
 Femoral fracture 564 (5.2%) 1030 (2.87%) 1485 (9.2%) 3079 (4.9%)  < 0.001
 Hyponatremia 110 (1.01%) 171 (0.48%) 62 (0.38%) 343 (0.5%)  < 0.001
 COPD 144 (1.33%) 277 (0.77%) 375 (2.3%) 796 (1.3%)  < 0.001
 Dyspnea 505 (4.66%) 104 (0.29%) 30 (0.19%) 639 (1.0%)  < 0.001
 Pneumonia 610 (5.62%) 1208 (3.37%) 680 (4.21%) 2498 (4.0%)  < 0.001
 Syncope 304 (2.8%) 421 (1.17%) 245 (1.52%) 970 (1.5%)  < 0.001
 Sepsis 411 (3.79%) 1433 (3.99%) 169 (1.05%) 2013 (3.2%)  < 0.001
 Urinary tract infection 505 (4.66%) 1026 (2.86%) 410 (2.54%) 1941 (3.1%)  < 0.001
  1. Bold value indicates significance p value < 0.05
  2. LAPS laboratory-based Acute Physiology Score, ICU intensive care unit, URTI upper respiratory tract infection, DVT PE deep vein thrombosis and pulmonary embolism, TIA transient ischemic attack, COPD chronic obstructive pulmonary disease