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. 2024 May 30;14(5):e079123. doi: 10.1136/bmjopen-2023-079123

Table 3.

The complete diagnostic model, including the intercept

Intercept and predictors β Coefficient
Intercept −1.66192
Dyspnoea (yes) 0.35172
Expectoration (yes) 0.36250
Cough (yes) 0.39671
Common cold (yes) 0.34374
Malaise (yes) 0.07475
Chest pain (yes) 0.20499
Respiratory rate >20 breaths/min 0.14566
Oxygen saturation <96% 0.24303
Abnormal auscultation findings (yes) 0.56758
Leucocytes* 0.00322
Neutrophils† 0.08338
C reactive protein <20 mg/L −0.64269
Previous event of CAP (no) −0.12006
Age of ≥75 and cough (yes) 0.53816
Age of ≥75 and oedema (no) −0.05797
Age of ≥75 and glucose >11.0 mmol/L 0.88124
AUC (95% CI) 0.85 (0.77 to 0.92)

*Cut-off for leucocytes: normal values 3.5–8.8×109/L.

†Neutrophils: >7.5×109/L.

AUC, area under the curve; CAP, community-acquired pneumonia.