Model 1 | Model 2 | Model 3 | Model 4 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
B | P | SE | OR | B | P | SE | OR | B | P | SE | OR | B | P | SE | OR | |
Variable | ||||||||||||||||
Sex | 1.13 | <0.001 | 0.33 | 3.09 | 0.66 | 0.04 | 0.32 | 1.94 | 0.56 | 0.08 | 0.32 | 1.75 | 0.91 | 0.01 | 0.32 | 2.48 |
Age 40–59 yrs | 0.83 | 0.01 | 0.31 | 2.29 | ||||||||||||
Age ≥60 yrs | −0.91 | 0.01 | 0.37 | 0.40 | 0.82 | 0.01 | 0.33 | 2.26 | −0.57 | 0.10 | 0.34 | 0.57 | ||||
Active smoking | 0.77 | 0.03 | 0.35 | 2.16 | −0.62 | 0.08 | 0.35 | 0.54 | 0.87 | 0.01 | 0.34 | 2.39 | ||||
Fever | 0.83 | 0.07 | 0.46 | 2.30 | 1.24 | <0.001 | 0.38 | 3.45 | 1.56 | <0.001 | 0.41 | 4.77 | 1.25 | <0.001 | 0.38 | 3.48 |
Flu-like illness | 0.98 | 0.02 | 0.41 | 2.66 | ||||||||||||
Pneumonia | 1.24 | 0.00 | 0.38 | 3.45 | 1.02 | 0.01 | 0.40 | 2.78 | 1.25 | 0.00 | 0.41 | 3.47 | 1.43 | 0.00 | 0.42 | 4.16 |
Confusion | 0.99 | 0.06 | 0.53 | 2.68 | ||||||||||||
Severe fatigue | 0.59 | 0.10 | 0.36 | 1.81 | ||||||||||||
Abdominal pain | −1.15 | 0.01 | 0.42 | 0.32 | −0.76 | 0.05 | 0.38 | 0.47 | −0.75 | 0.05 | 0.38 | 0.47 | −0.88 | 0.02 | 0.37 | 0.42 |
Earache | −1.02 | 0.04 | 0.49 | 0.36 | ||||||||||||
Chest pain | 0.61 | 0.08 | 0.35 | 1.84 | ||||||||||||
Cough | −0.63 | 0.05 | 0.32 | 0.53 | −0.99 | 0.04 | 0.47 | 0.37 | −0.86 | 0.01 | 0.33 | 0.42 | ||||
Headache | 1.14 | 0.04 | 0.56 | 3.12 | 0.64 | 0.06 | 0.35 | 1.90 | ||||||||
Constant | −2.42 | <0.001 | 0.56 | n.a. | −2.15 | <0.001 | 0.47 | n.a. | −1.80 | <0.001 | 0.46 | n.a. | −1.55 | <0.001 | 0.50 | n.a. |
χ2 | 71.00 | 52.00 | 65.00 | 67.00 | ||||||||||||
df | 9.00 | 8.00 | 8.00 | 8.00 | ||||||||||||
P | <0.001 | <0.001 | <0.001 | <0.001 | ||||||||||||
Nagelkerke R2 | 0.37 | 0.28 | 0.34 | 0.33 | ||||||||||||
Hosmer & Lemeshow | 0.69 | 0.46 | 0.81 | 0.71 | ||||||||||||
Classification accuracy | 75.1% | 71.8% | 73.1% | 73.1% |