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Table 1 Clinical parameters and spirometric values of the exudates and transudates study groups

From: Expression of YKL-40 and MIP-1a proteins in exudates and transudates: biomarkers for differential diagnosis of pleural effusions? A pilot study

  Exudates (n = 49) Transudates (n = 11) P-Value
Clinical parameters
Gender    
 Male 33 (67.3 %) 7 (63.6 %) 1.00a
 Female 16 (32.7 %) 4 (36.4 %)
Age (mean ± SD, years) 60.1 ± 20.9 73.3 ± 15.7 0.055b
Smoking habit    
 Current smokers 19 (38.8 %) 6 (54.5 %) 0.55c
 Non-smokers 28 (57.1 %) 5 (45.5 %)
 Ex-smokers 2 (4.1 %) 0 (0.0 %)
Pack-years (mean ± SD) 55.2 ± 36.8 80.0 ± 35.8 0.17b
Spirometric values
FEV1 (% pred.) 79.8 ± 18.0 78.1 ± 19.1 0.78b
FVC (% pred.) 78.2 ± 15.8 76.0 ± 16.7 0.68b
FEV1/FVC (%) 79.8 ± 7.6 76.7 ± 10.1 0.25b
  1. aFisher’s exact test; bStudent’s t-test; cChi-square test