Table 2.

Clinical Predictors of Influenza A (H1N1) Infection by Multivariate Stepwise Logistic Regression Analysis

Variables included in the stepwise model: age, sex, fever, cough, sore throat, myalgia, headache, rhinorrhea, and gastrointestinal symptoms (nausea, vomiting, diarrhea).

OR, odds ratio; CI, confidence interval.

^*Body temperature ≥ 37.8℃ or the use of an antipyretic within 12 hours before visit.