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Table 3 Univariate and multivariate analysis of the clinical characteristics of excluded CAP patients without extra-pulmonary infections compared to definite CAP patients

From: Diagnostic accuracy of C-reactive protein and procalcitonin in suspected community-acquired pneumonia adults visiting emergency department and having a systematic thoracic CT scan

Patient characteristics n (%) or median IQR Total Excluded CAPa Definite CAP p OR p
N = 157 N = 59 N = 98 [95 % CI]
Cough 122 (77.7) 41 (69.5) 81 (82.7) 0.047 -  
Chest pain 53 (33.7) 16 (27.1) 37 (37.8) 0.168 -  
Expectoration 78 (49.7) 27 (45.8) 51 (52.0) 0.509 -  
Dyspnea 111 (70.7) 44 (74.6) 67 (68.4) 0.471 -  
Chills 52 (33.1) 21 (35.6) 31 (31.6) 0.727 -  
Headaches 33 (21.0) 9 (15.2) 24 (24.5) 0.225 -  
Myalgia 35 (22.3) 11 (18.6) 24 (24.5) 0.432 -  
Crackles 49 (31.2) 13 (22.0) 36 (36.7) 0.051 -  
Fever 51 (32.5) 10 (16.9) 41 (41.8)) 0.001 3.15 [1.29-7.73] 0.012
Confusion 0 0 0 - -  
Respiratory rate > 30/min 19 (12.1) 7 (11.9) 12 () 0.856 -  
Heart rate > 125/min 11 (7.0) 2 (3.4) 9 (9.2) 0.211 -  
Systolic blood pressure < 90 mmHg 3 (1.9) 0 3 (3.1) 0.292 -  
Diastolic blood pressure < 60 mmHg 10 (6.4) 1 () 9 (9.2) 0.091 -  
White blood cells > 10.103 /mm3 86 (54.8) 22 (37.3) 64 (65.3) 0.004 -  
PaO2 < 60 mmHg or Sat02 < 90 % 18 (11.4) 6 (10.1) 12 (12.2) 0.799 -  
CRP 74 [21.3 – 146.1] 17.3 [3.6 – 57.5] 125.1 [65.0 - 208.7] <0.001 1.02 [1.01-1.03] <0.001
PCT 0.17 [0.07 – 0.72] 0.09 [0.06 - 0.28] 0.24 [0.11 - 1.38] <0.001 - -
  1. CAP community-acquired pneumonia, CRP C-reactive protein, PCT procalcitonin
  2. aPatients with excluded CAP without extra-pulmonary infections
  3. The bold data correspond to the variables included into the multivariate logistic regression