|
Characteristics
|
Total patients (n = 409)
|
Mortality (n = 20)
|
Survival (n = 389)
|
p Value
|
|---|
|
Male sex
|
205 (50.1)
|
13 (65.0)
|
192 (49.3)
|
0.17
|
|
Age, years
|
79. 5 ± 8.3
|
81.2 ± 8.5
|
79.5 ± 6.4
|
0.36
|
|
Age subgroup
|
|
Young elderly (65–74 yr)
|
125 (30.6)
|
4 (20.0)
|
121 (31.1)
|
0.31
|
|
Moderately elderly (75–84 yr)
|
174 (42.5)
|
10 (50.0)
|
164 (42.1)
|
0.51
|
|
Old elderly (≥85 yr)
|
110 (26.9)
|
6 (30.0)
|
104 (26.8)
|
0.76
|
|
Vital signs
|
|
Respiratory rate (per minute)
|
21.3 ± 4.2
|
23.4 ± 7.5
|
21.1 ± 3.9
|
0.02
|
|
Glasgow’s coma scale
|
13.9 ± 2.3
|
12.0 ± 4.0
|
14.1 ± 2.2
|
0.03
|
|
SBP (mmHg)
|
146.1 ± 30.5
|
135.1 ± 31.2
|
146.7 ± 30.5
|
0.28
|
|
Body temperature (°Celsius)
|
38.18 ± 0.93
|
38.19 ± 0.92
|
38.17 ± 0.93
|
0.38
|
|
Heart rate (beats/min)
|
98.8 ± 20.5
|
103.0 ± 21.6
|
98.6 ± 20.5
|
0.55
|
|
Past history
|
|
Cancer
|
61 (14.9)
|
7 (35)
|
54 (13.9)
|
0.02
|
|
COPD
|
111 (27.1)
|
0 (0)
|
111 (28.5)
|
0.03
|
|
Hypertension
|
263 (64.3)
|
17 (85.0)
|
246 (63.2)
|
0.06
|
|
Coronary artery disease
|
103 (25.1)
|
10 (50.0)
|
93 (23.9)
|
0.09
|
|
Stroke
|
65 (15.9)
|
4 (20)
|
61 (15.7)
|
0.63
|
|
Diabetes
|
163 (39.8)
|
7 (35.0)
|
156 (40.1)
|
0.66
|
|
Laboratory data
|
|
WBC (cells/mm3)
|
10,590.0 ± 5820.0
|
14530.0 ± 6.2
|
10380.0 ± 5.8
|
< 0.01
|
|
Bandemia (band form > 10%)
|
43 (10.2)
|
7 (35)
|
36 (9.2)
|
< 0.01
|
|
CRP (mg/dL)
|
8.2 ± 10.1
|
11.7 ± 9.2
|
8.03 ± 10.2
|
0.09
|
|
Platelet (103/mm3)
|
186.2 ± 158.8
|
198.9 ± 140.3
|
185.6 ± 159.9
|
0.68
|
|
SIRS
|
1.91 ± 1.1
|
2.5 ± 1.1
|
1.9 ± 1.1
|
0.03
|
|
SIRS ≥2
|
258 (63.1)
|
16 (80.0)
|
242 (62.2)
|
0.11
|
|
SIRS ≥3
|
126 (30.8)
|
12 (60.0)
|
114 (29.3)
|
< 0.01
|
|
Influenza subtypes
|
|
Influenza A
|
278 (68.0)
|
12 (60)
|
266 (68.3)
|
0.45
|
|
Influenza B
|
120 (29.3)
|
5 (25)
|
115 (29.5)
|
0.67
|
|
Influenza A + B
|
11 (2.7)
|
3 (15)
|
8 (2.1)
|
< 0.01
|
|
Influenza vaccination
|
8 (1.9)
|
1 (5)
|
7 (1.8)
|
0.55
|
|
DNR
|
4 (0.98)
|
2 (10)
|
2 (0.5)
|
0.08
|
|
Admission rate†
|
343 (83.9)
|
20 (100)
|
323 (83.0)
|
0.05
|
- Data were presented as % or Mean ± SD. ED Emergency Department, SD standard deviation, SBP systolic blood pressure, COPD chronic obstructive pulmonary disease, WBC white blood cell count, CRP C-reactive protein, DNR don not rescue, SIRS Systemic Inflammatory Response Syndrome
- †Admission to general ward or intensive care unit
