|
Signs/symptoms, n (%)
|
|
Fever
|
801 (97.1)
|
781 (84.6)
|
6.07 (3.89–9.46)
|
< 0.001
|
|
Headache
|
445 (53.9)
|
489 (53.0)
|
1.04 (0.86–1.25)
|
0.688
|
|
Malaise
|
497 (60.2)
|
550 (59.6)
|
1.03 (0.85–1.24)
|
0.781
|
|
Myalgia
|
354 (42.9)
|
244 (26.4)
|
2.09 (1.71–2.56)
|
< 0.001
|
|
Cough
|
630 (76.4)
|
511 (55.4)
|
2.60 (2.12–3.20)
|
< 0.001
|
|
Sore throat
|
546 (66.2)
|
689 (74.6)
|
0.66 (0.54–0.82)
|
< 0.001
|
|
Dyspnea
|
86 (10.4)
|
75 (8.1)
|
1.32 (0.95–1.82)
|
0.098
|
|
Time from onset of symptoms to admission, n (%)
|
|
1 day
|
392 (47.5)
|
384 (41.6)
|
1
| |
|
2 days
|
209 (25.3)
|
194 (21.0)
|
1.06 (0.83–1.34)
|
0.661
|
|
3 days
|
138 (16.7)
|
158 (17.1)
|
0.86 (0.65–1.12)
|
0.254
|
|
≥ 4 days
|
86 (10.4)
|
187 (20.3)
|
0.45 (0.34–0.60)
|
< 0.001
|
|
Time from onset of symptoms to admission, median (range)
|
2 (0–6)
|
2 (0–7)
|
0.85 (0.80–0.91)
|
< 0.001
|
|
Length of hospital stay, n (%) b
|
|
0–4 days
|
254 (30.8)
|
342 (37.1)
|
1
| |
|
5 days
|
155 (18.8)
|
128 (13.9)
|
1.63 (1.23–2.17)
|
< 0.001
|
|
6–7 days
|
261 (31.6)
|
259 (28.1)
|
1.36 (1.07–1.72)
|
< 0.001
|
|
Median length of hospital stay (range)
|
6 (0–35)
|
5 (0–31)
|
1.00 (0.98–1.04)
|
0.627
|
|
Intensive care unit admission, n (%)
|
1 (0.1)
|
2 (0.2)
|
0.56 (0.05–6.17)
|
0.635
|
|
Pregnancy outcome, n (%)
|
|
Aborted (< 20 weeks)
|
14 (1.7)
|
39 (4.2)
|
0.39 (0.21–0.73)
|
0.003
|
|
Stillborn (≥ 20 weeks)
|
12 (1.5)
|
11 (1.2)
|
1.22 (0.54–2.79)
|
0.631
|
|
Live delivery during the current admission, n (%)
|
78 (9.5)
|
99 (10.7)
|
0.87 (0.64–1.19)
|
0.379
|
|
Preterm (< 37 weeks) c
|
17 (21.8)
|
19 (19.2)
|
1.17 (0.56–2.45)
|
0.669
|
|
Cesarean‡
|
14 (17.9)
|
16 (16.2)
|
1.13 (0.52–2.50)
|
0.753
|
|
Low birth weight (< 2500 g) c
|
3 (3.8)
|
12 (12.1)
|
0.29 (0.08–1.07)
|
0.062
|
|
Discharge diagnosis, n (%)
|
|
Influenza
|
617 (74.8)
|
108 (11.7)
|
23.34 (18.07–30.13)
|
< 0.001
|
|
Pneumonia
|
9 (1.1)
|
13 (1.4)
|
0.77 (0.33–1.82)
|
0.553
|
|
Respiratory disease
|
187 (22.7)
|
736 (79.7)
|
0.74 (0.06–0.09)
|
< 0.001
|
|
Other
|
12 (1.5)
|
66 (7.2)
|
0.19 (0.10–0.36)
|
< 0.001
|
