Odds ratio 95% CI p
Sex, male 1.3 0.71-2.4 0.4
Age >= 65 1.8 0.63-5.0 0.28
Comorbidities 0.78 0.37-1.6 0.51
RIDT positive 28.4 14.1-57.1 <0.001***
Cough 0.87 0.44-1.7 0.69
Fever 1.2 0.66-2.1 0.56
Contact with influenza patient 1.4 0.75-2.6 0.29
High Influenza activity 2.5 1.3-4.8 0.005***
Time from symptom onset
12hours~48 hours 1 (Reference) 1 (Reference)
< 12 hours 2.2 1.0-4.7 0.046**
>= 48 hours 0.86 0.35-2.1 0.75
ER Physician
PGY 1-2 resident 1 (Reference) 1 (Reference)
Internists 3.7 1.8-7.7 <0.001***
Non-Internists 6.3 2.3-17.8 <0.001***