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) |