Prolonged Length of Stay in the Emergency Department and Mortality in Critically Ill Elderly Patients with Infections: A Retrospective Multicenter Study
Table 2
Baseline characteristics of critically ill elderly patients with infection.
Characteristic
All (n = 439)
Nonsurvivor (n = 132)
Survivor (n = 307)
value
Age (years) (IQR)
78 (73–83)
79 (73–82.5)
78 (73–83)
0.996
Gender, male, n (%)
222 (50.6)
71 (53.8)
151 (49.2)
0.376
Comorbidities, n (%)
Diabetes mellitus
176 (40.1)
56 (42.4)
120 (39.1)
0.513
Hypertension
264 (60.1)
81 (61.4)
183 (59.6)
0.731
Chronic renal disease
64 (14.6)
19 (14.4)
45 (14.7)
0.943
Cardiovascular disease
54 (12.3)
17 (12.9)
37 (12.1)
0.809
Malignancy
72 (16.4)
39 (29.5)
33 (10.7)
<0.001
Initial vital signs
Systolic BP (mmHg)
120.5 (98–141)
114 (93.5–136.5)
122 (98–146)
0.036
Diastolic BP (mmHg)
70 (57–80)
66 (54–80)
70 (54.5–80)
0.603
Heart rate (beats/min)
96 (80–112)
96 (80–111)
96 (84–118)
0.578
Respiratory rate (breaths/min)
20 (20–24)
20 (18–22)
20 (20–24)
0.067
Body temperature (°C)
36.8 (36.2–37.9)
36.9 (36.2–37.9)
36.8 (36.3–37.9)
0.545
KTAS level (1, 2), n (%)
182 (41.5)
56 (42.4)
126 (40.0)
0.788
Laboratory results, median (IQR)
WBC count (109/L)
11.6 (7.9–18.2)
11.6 (7.6–18.4)
11.5 (7.8–17.0)
0.542
Platelets
207.0 (145.0–291.0)
175.5 (113.0–263.5)
214.0 (156.0–299.5)
0.007
Total bilirubin
0.8 (0.5–1.3)
1.0 (0.6–1.5)
0.8 (0.5–1.2)
0.022
Albumin
3.2 (2.7–3.6)
3.0 (2.6–3.4)
3.2 (2.7–3.6)
<0.001
Lactate
1.9 (1.2–3.4)
2.3 (1.5–4.3)
1.7 (1.2–2.8)
<0.001
SOFA score
6 (4–9)
8 (5–11)
5 (3–8)
<0.001
Septic shock, n (%)
123 (28.0)
59 (44.7)
64 (20.8)
<0.001
Door-to-antibiotic time (min)
188 (138–272)
174 (131–261)
194 (143–275)
0.140
Vasopressor at ED, n (%)
184 (41.9)
83 (62.9)
101 (32.9)
<0.001
Ventilator at ED, n (%)
155 (35.3)
66 (50.0)
89 (29.0)
<0.001
ED LOS (hours)
8.0 (5.0–19.0)
9.0 (5.1–28.4)
8.0 (5.0–16.5)
0.023
ICU LOS (days)
6.0 (3.0–12.0)
7.5 (4.0–14.0)
6.0 (3.0–12.0)
0.050
Hospital LOS (days)
16.0 (9.0–28.0)
13.5 (6.0–24.0)
17.0 (10.0–29.0)
0.002
BP: blood pressure; KTAS: Korean Triage and Acuity Scale; WBC: white blood cell; SOFA: Sequential Organ Failure Assessment; ED: emergency department; LOS: length of stay; ICU: intensive care unit.
