Volume 23, Number 4—April 2017
Markers of Disease Severity in Patients with Spanish Influenza in the Japanese Armed Forces, 1919–1920
|Risk factor||Hazard ratio (95% CI)||p value|
|Diphasic fever||1.73 (1.33–2.25)||<0.001|
|≥6 d of high fever from admission||1.70 (1.29–2.25)||<0.001|
|≥26 breaths/min on maximum respiration rate||1.57 (1.19–2.06)||<0.001|
|Adventitious discontinuous lung sounds||1.56 (1.17–2.07)||<0.001|
*Diphasic fever, a body temperature >38°C at a time after the initial fever had decreased to <37.5°C; high fever, body temperature >38°C.
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