| |
Adjusted odds ratio (95% CI) a
|
|---|
| |
Any influenza
|
A(H1N1)pdm09
|
A(H3N2)
|
B/Yamagata
|
B/Victoria
|
|---|
|
Characteristic
|
N = 825
|
N = 361
|
N = 224
|
N = 106
|
N = 76
|
|---|
|
Signs and symptoms
|
|
Fever
|
6.34 (4.01–10.03)
|
5.81 (3.02–11.17)
|
6.36 (2.88–10.65)
|
11.0 (2.65–45.73)
|
5.56 (1.31–23.51)
|
|
Headache
|
1.03 (0.84–1.25)
|
1.35 (1.02–1.77)
|
0.84 (0.62–1.14)
|
0.72 (0.47–1.09)
|
1.41 (0.83–2.40)
|
|
Malaise
|
1.05 (0.86–1.29)
|
1.67 (1.26–2.22)
|
0.72 (0.53–0.98)
|
0.56 (0.37–0.85)
|
1.84 (1.01–3.33)
|
|
Myalgia
|
1.83 (1.48–2.26)
|
2.62 (1.98–3.47)
|
1.16 (0.83–1.62)
|
1.71 (1.11–2.63)
|
2.12 (1.28–3.52)
|
|
Cough
|
2.76 (2.13–3.43)
|
4.21 (3.04–5.83)
|
2.03 (1.47–2.82)
|
2.14 (1.35–3.38)
|
4.72 (2.35–9.45)
|
|
Sore throat
|
0.64 (0.51–0.80)
|
0.53 (0.39–0.71)
|
0.71 (0.50–1.00)
|
0.57 (0.36–0.89)
|
0.78 (0.44–1.39)
|
|
Dyspnea
|
1.10 (0.78–1.54)
|
2.31 (1.54–3.49)
|
0.37 (0.18–0.77)
|
0.42 (0.16–1.08)
|
0.98 (0.37–2.63)
|
|
Days between symptom onset and admission
|
|
Below median
|
1
|
1
|
1
|
1
|
1
|
|
Median or above
|
1.43 (0.88–2.32)
|
2.06 (1.12–3.79)
|
1.29 (0.56–2.99)
|
1.15 (0.43–3.13)
|
0.96 (0.26–3.51)
|
|
Length of stay
|
|
Below median
|
1
|
1
|
1
|
1
|
1
|
|
Median or above
|
0.94 (0.77–1.14)
|
1.34 (1.02–176)
|
0.72 (0.53–0.98)
|
0.52 (0.34–0.80)
|
1.08 (0.65–1.77)
|
|
Pregnancy outcome
|
|
Abortion
|
0.32 (0.16–0.64)
|
0.44 (0.18–1.09)
|
0.30 (0.09–1.05)
|
0.36 (0.80–1.67)
|
–
|
|
Stillbirth
|
1.10 (0.47–2.59)
|
0.35 (0.07–1.72)
|
1.14 (0.30–4.35)
|
3 (0.87–10.28)
|
1.34 (0.25–7.06)
|
|
Live delivery
|
0.74 (0.52–1.06)
|
0.78 (0.47–1.29)
|
0.64 (0.37–1.10)
|
0.90 (0.45–1.78)
|
0.62 (0.20–1.94)
|
|
Preterm delivery
|
0.89 (0.45–1.78)
|
1.07 (0.45–2.56)
|
0.67 (0.22–2.06)
|
0.42 (0.05–3.31)
|
2.42 (0.47–2.38)
|
|
Cesarean delivery
|
0.96 (0.45–2.06)
|
0.46 (0.12–1.70)
|
1.22 (0.44–3.42)
|
0.87 (0.18–4.07)
|
–
|
|
Low birth weight
|
0.34 (0.10–1.10)
|
0.28 (0.03–2.13)
|
0.42 (0.09–2.06)
|
–
|
2.85 (0.29–1.07)
|
- aAdjusted for age, trimester, comorbidity, hospital admission in the previous 12 months, time to swab, and season-week
