| Influenza A/H1N1 vs influenza A/H3N2 OR (95% CI) | Influenza A/H1N1 vs influenza B OR (95% CI) | Influenza B vs influenza A/H3N2 OR (95% CI) |
---|---|---|---|
Presence of fever | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.68 (0.41-0.99) | 1.03 (0.66-1.79) | 0.65 (0.39-0.94) |
Presence of high-grade fever" | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.76 (0.55-0.97) | 0.98 (0.62-1.55) | 0.75 (0.53-0.96) |
Upper respiratory tract infection | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 1.34 (1.10-1.81) | 0.86 (0.53-1.36) | 1.31 (1.08-1.79) |
Lower respiratory tract infection | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.60 (0.39-0.84) | 1.19 (0.68-1.91) | 0.69 (0.43-0.93) |
Fever without source | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.64 (0.43-0.85) | 1.12 (0.66-1.93) | 0.61 (0.40-0.87) |
Hospitalisation | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.57 (0.37-0.82) | 0.61 (0.40-0.88) | 0.84 (0.53-1.36) |
Duration of hospitalisation (days) | Â | Â | Â |
< 7 days | 1 (reference) | 1 (reference) | 1 (reference) |
≥7 days | 0.62 (0.40-0.90) | 1.11 (0.85-1.42) | 0.60 (0.39-0.85) |
Absences from school (days) | Â | Â | Â |
< 7 days | 1 (reference) | 1 (reference) | 1 (reference) |
≥7 days | 0.64 (0.43-0.91) | 0.96 (0.61-1.74) | 0.62 (0.42-0.98) |
Antibiotic use | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.65 (0.44-0.93) | 1.14 (0.66-1.98) | 0.68 (0.47-0.94) |
Antipyretic use | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.69 (0.40-0.91) | 0.93 (0.54-1.91) | 0.67 (0.39-0.96) |
Aerosol therapy | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.65 (0.43-0.88) | 1.18 (0.67-1.89) | 0.62 (0.36-0.93) |
Steroids | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.69 (0.39-0.94) | 0.93 (0.58-1.67) | 0.70 (0.49-0.95) |
Household diseases similar to that of the infected child | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.63 (0.41-0.92) | 0.71 (0.42-0.94) | 0.78 (0.50-0.98) |
Additional medical visits among households | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.68 (0.40-0.94) | 0.74 (0.46-0.97) | 0.79 (0.55-0.99) |
Household antibiotic prescriptions | Â | Â | Â |
No | 1 (reference) | 1 (reference) | 1 (reference) |
Yes | 0.65 (0.42-0.93) | 0.87 (0.62-1.25) | 0.91 (0.68-1.29) |
Lost working days by mothers | Â | Â | Â |
< 3 days | 1 (reference) | 1 (reference) | 1 (reference) |
≥3 days | 0.65 (0.34-0.89) | 1.13 (0.54-1.92) | 0.69 (0.38-0.96) |
Lost working days by fathers | Â | Â | Â |
< 3 days | 1 (reference) | 1 (reference) | 1 (reference) |
≥3 days | 0.58 (0.36-0.85) | 0.87 (0.62-1.35) | 0.65 (0.41-0.93) |
Lost school days by siblings | Â | Â | Â |
< 3 days | 1 (reference) | 1 (reference) | 1 (reference) |
≥3 days | 0.76 (0.54-0.97) | 0.92 (0.70-1.38) | 0.77 (0.58-0.98) |