Table 2 ICU patient characteristics and outcomes
| Â | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
Age (years) | 63 (50–75) | 62 (50–75) | 63 (50–75) | 62 (50–75) | 62 (50–75) | 62 (51–75) | 63 (51–74) | 63 (52–75) | 63 (52–74) | 64 (52–74) | 63 (52–73) |
Age ≥ 80 years (%) | 14.3 | 13.3 | 14.5 | 14.7 | 14.2 | 14.5 | 14.1 | 15.3 | 15 | 15 | 13.2 |
Male gender (%) | 61.8 | 61.8 | 61.2 | 61.4 | 60.5 | 61.4 | 62.0 | 61.9 | 61.7 | 61.9 | 60.4 |
Comorbidity (%) | 13.3 | 14.5 | 13.5 | 12.4 | 15.9 | 13.7 | 15.1 | 15.7 | 15.6 | 16.1 | 17.4 |
Admission type | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Elective surgery (%) | 23.0 | 21.4 | 20.3 | 21.9 | 24.3 | 24.5 | 24.8 | 23.1 | 22.7 | 21.6 | 22.0 |
Emergency surgery (%) | 21.2 | 21.3 | 22.9 | 24.4 | 21.8 | 21.5 | 22.3 | 21.7 | 20.5 | 20.9 | 20.9 |
Medical (%) | 55.8 | 57.3 | 56.9 | 53.7 | 53.9 | 54.0 | 52.9 | 55.2 | 56.8 | 57.5 | 57.1 |
APACHE IV APS | 51 (33–76) | 51 (33–76) | 50 (34–74) | 49 (32–73) | 49 (32–73) | 49 (32–75) | 49 (32–75) | 49 (32–74) | 49 (32–74) | 49 (32–72) | 48 (32–71) |
APACHE IV | 64 (43–89) | 63 (43–89) | 63 (43–87) | 61 (42–86) | 62 (42–87) | 61 (42–88) | 61 (42–87) | 62 (42–88) | 62 (43–88) | 61 (43–85) | 61 (43–84) |
Mechanical ventilation (%) | 55.1 | 56.2 | 56.5 | 55.1 | 53.9 | 54.8 | 53.4 | 54.0 | 51.8 | 51.6 | 53.3 |
Vasopressor (%) | 12.1 | 12.1 | 11.7 | 12.3 | 13.1 | 14.7 | 16.4 | 24.0 | 23.4 | 27.1 | 30.9 |
Renal replacement therapy (%) | 9.6 | 11.6 | 13.2 | 12.1 | 11.5 | 11.8 | 12.8 | 13.1 | 13.1 | 14.1 | 13.2 |
ICU LOS (days) | 2.0 (1–4.4) | 1.9 (1.0–4.1) | 2.0 (1.0–4.5) | 1.9 (1.0–4.2) | 2.0 (1.0–4.5) | 2.0 (1.0–4.6) | 2.0 (1.0–4.6) | 2.0 (1.0–4.7) | 2.0 (1.0–4.5) | 2.0 (1.0–4.4) | 2.0 (1.0–4.2) |
Predicted ICU LOS (days) | 4.9 (3.1–6.6) | 4.9 (3.2–6.6) | 4.9 (3.2–6.7) | 4.8 (3.2–6.6) | 4.7 (3.1–6.6) | 4.7 (3.1–6.6) | 4.7 (3.0–6.6) | 4.7 (3.1–6.7) | 4.7 (3.0–6.7) | 4.7 (3.0–6.7) | 4.7 (3.0–6.6) |
Hospital LOS (days) | 12.2 (6.8–24.4) | 12.1 (6.5–24.1) | 11.9 (6.5–24.0) | 12.1 (6.7–24.1) | 12.2 (6.8–24.2) | 12.4 (6.8–24.1) | 13.0 (7.0–25.6) | 12.5 (6.8–25.8) | 12.8 (6.9–25.8) | 13.2 (6.9–27.0) | 13.0 (7.1–26.2) |
ICU mortality (%) | 12.5 | 12.1 | 12.0 | 11.0 | 10.8 | 10.7 | 9.8 | 9.7 | 9.4 | 9.3 | 8.5 |
Hospital mortality (%) | 19.7 | 19.5 | 18.8 | 16.9 | 17.0 | 17.6 | 16.7 | 16.7 | 15.7 | 15.8 | 14.3 |
APACHE IV predicted mortality (%) | 24.3 | 24.5 | 23.6 | 22.7 | 23.4 | 23.6 | 23.2 | 23.6 | 23.5 | 22.5 | 21.9 |
SMR | 0.81 | 0.80 | 0.80 | 0.74 | 0.73 | 0.74 | 0.72 | 0.71 | 0.67 | 0.70 | 0.65 |
Readmission rate (%) | 5.69 | 5.76 | 5.48 | 5.14 | 4.65 | 4.87 | 4.92 | 5.54 | 4.96 | 5.45 | 5.69 |