|
Median days from onset to admission (range)
|
2 (0 – 20) (n = 136)
|
3 (0 – 21) (n = 332)
|
0.06
|
|
Admission within 2 days of illness onset
|
74/136 (54)
|
150/334 (45)
|
0.06
|
|
Median length of stay- days (range)
|
3 (0 – 47) (n = 136)
|
3 (0 – 77) (n = 332)
|
0.14
|
|
Clinical symptoms at admission
| | | |
|
Cough
|
118 (86)
|
284 (85)
|
0.45
|
|
Fever
|
115 (84)
|
294 (88)
|
0.20
|
|
Shortness of Breath
|
91 (66)
|
155 (46)
|
<0.01
|
|
Wheezing
|
62 (45)
|
47 (14)
|
<0.01
|
|
Fatigue/Weakness
|
47 (34)
|
125 (37)
|
0.71
|
|
Myalgias
|
43 (31)
|
122 (36)
|
0.57
|
|
Rhinorrhea
|
42 (31)
|
103 (31)
|
0.88
|
|
Chills
|
38 (28)
|
120 (36)
|
0.23
|
|
Sore Throat
|
33 (24)
|
96 (29)
|
0.25
|
|
Vomiting
|
31 (23)
|
98 (29)
|
0.08
|
|
Headache
|
31 (23)
|
99 (30)
|
0.17
|
|
Diarrhea
|
18 (13)
|
75 (22)
|
0.03
|
|
Underlying medical condition
| | | |
|
Any condition excluding asthma
|
64 (47)
|
217 (50)
|
0.11
|
|
Diabetes
|
24 (18)
|
51 (15)
|
0.18
|
|
Chronic obstructive pulmonary disease
|
18 (13)
|
31 (9)
|
0.04
|
|
Cardiovascular disease
|
16 (12)
|
52 (16)
|
0.55
|
|
Immunosuppression
|
15 (11)
|
48 (14)
|
0.45
|
|
Neuromuscular disorder
|
11 (8)
|
26 (8)
|
0.87
|
|
Cognitive dysfunction
|
10 (7)
|
25 (7)
|
0.76
|
|
Seizure disorder
|
7 (5)
|
25 (7)
|
0.21
|
|
Chronic renal disease
|
3 (2)
|
38 (11)
|
<0.01
|
|
Pregnancy
|
8 (6)
|
38 (12)
|
0.11
|
|
Current smoker
|
23/121 (19)
|
58/303 (19)
|
0.56
|
|
Obese or morbidly obese†
|
47/129 (36)
|
103/298 (35)
|
0.37
|
|
Positive sterile site culture
|
1/137 (1)
|
13/336 (4)
|
0.11
|
|
Pneumonia at admission
|
45/123 (37)
|
133/281 (47)
|
0.05
|
|
Seasonal flu vaccine
|
33/86 (38)
|
64/203 (32)
|
0.49
|
