Volume 13, Number 4—April 2007
Research
Spanish Influenza in Japanese Armed Forces, 1918–1920
Table
Characteristics of patients who survived influenza with those who died of influenza, Fifth Japanese Army Garrison Hospital, 1919–1920*
Characteristic | Patients who survived (n = 124) | Patients who died (n = 8) | p value |
---|---|---|---|
Age, y |
22.7 |
22.8 |
>0.9 |
Medical history |
31/116 |
2/8 |
>0.9 |
Body temperature at time of hospitalization, °C |
38.7 |
39.9 |
0.0005 |
Heart rate, beats/min |
89 |
106 |
0.004 |
Rales |
63/116 |
8/8 |
0.01 |
Reddening of throat |
98/116 |
7/8 |
>0.9 |
Digestive symptoms |
23/116 |
4/8 |
0.07 |
“Agonized facial expression”† |
5/116 |
3/8 |
0.009 |
No. days from onset of illness to hospitalization |
4.5 |
6.8 |
0.14 |
No. days hospitalized | 14.8 | 7.1 | 0.04 |
*Mann-Whitney U test was used to test differences between the 2 groups. Fisher exact test was used to test differences in the ratio of the cross-calculation table. One case (at day 79) was excluded. This patient was admitted to the hospital with flulike symptoms but died of a bacterial infection.
†A painful expression as reported by Japanese doctors.