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Table 2 Multivariate analysis of clinical variables in prediction model for pneumonia in 249 patients presenting at radiology department with acute respiratory tract infection in primary care

From: Prediction model for pneumonia in primary care patients with an acute respiratory tract infection: role of symptoms, signs, and biomarkers

Diagnostic variableMultivariable OR (95%CI)P value
Age cohort (18–47 years is reference category) 0.28
• 48–632.17 (0.65–7.26) 
• ≥640.49 (0.03–7.44) 
Runny nose absent3.00 (1.23–7.33)0.02
Feel ill14.89 (3.27–67.91)0.00
Current smoker0.34 (0.09–1.39)0.13
Oxygen saturation0.88 (0.67–1.16)0.38
CRB-65 scorea (0 is reference category)
• 1
6.77 (0.51–89.78)0.35
  1. aCRB-65 severity score predicting 30 day mortality with higher score implicating higher 30 day mortality. C = new onset confusion, R = respiratory rate ≥ 30/min, B = Blood pressure (Systolic < 90 mmHg or Diastolic ≤60 mmHg), 65 = Age ≥ 65
  2. No values for CRB65 score of 2 since only 2 patients were present in that category