Table 3.

Clinical Decision Rules Based on Multivariate Models from Combined Dataset (Flu Scores 1 to 3) and Multivariate Model of Monto et al13 (Flu Scores 4 and 5)

Clinical VariableBetaOdds ratio (95% CI)Points
Flu score 1
    Fever1.2253.40 (1.97–5.89)7
    Cough0.9122.49 (0.95–6.49)5
    Onset <48 hours0.7272.07 (1.17–3.65)4
    Myalgias1.3864.00 (1.91–8.39)8
    Constant−3.423
Flu score 2
    Fever0.7632.14 (1.13–4.06)2
    Myalgia1.3043.68 (1.72–7.90)4
    Chills/sweats0.4301.54 (0.79–2.97)2
    Fever, cough, acute1.4434.23 (1.95–9.19)4
    Constant−2.686
Flu score 3
    Onset <48 hours0.7212.06 (1.19–3.55)1
    Myalgia1.2603.53 (1.65–7.53)2
    Chills/sweats0.4011.49 (0.78–2.87)1
    Fever and cough1.3613.90 (2.27–6.70)2
    Constant−2.808
Flu score 4
    Fever (temp ≥37.8°C)1.1823.263.0
    Cough1.0472.853.0
    Nasal congestion0.6831.982.0
    Age ≥55 years0.4701.601.5
    Weakness0.4321.541.5
    Onset <48 hours0.4251.531.5
    Male0.2391.271.0
    Sore throat−0.3290.72−1.0
Flu score 5
    Fever1.1823.263
    Cough1.0472.853
    Nasal congestion0.6831.982
    Age ≥55 years0.4701.601
    Weakness0.4321.541
    Onset <48 hours0.4251.531
    Male sex0.2391.271
    Sore throat−0.3290.72−1