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Table 1 Demographic data, acquisition of pneumonia, length of hospital stay, mortality rate, and different discovery methods of Serratia marcescens and Proteus mirabilis infection in patients with pneumonia

From: Cefepime shows good efficacy and no antibiotic resistance in pneumonia caused by Serratia marcescens and Proteus mirabilis – an observational study

Total No. of Gram-negative bacteria pneumonia = 115 Serratia marcescens (%) Proteus mirabilis (%) P value
No. of patients 43 (37.4) 20 (17.4)  
Gender    
Male 26 (60.5) 14 (70) 0.655
Female 17 (39.5) 6 (30) 0.655
Age mean + SD (years) 66.2 ± 13.4 64.6 ± 12.8 0.648
Acquisition of pneumonia    
Community-acquired pneumonia 15 (34.9) 6 (30) 0.083
Nosocomial-acquired pneumonia 23 (53.5) 7 (35) 0.083
Aspiration pneumonia 5 (11.6) 7 (35) 0.083
Specimens    
Tracheal secretions 33 (76.7) 9 (45) 0.056
Bronchial secretions 7 (16.3) 5 (25) 0.056
Sputum 1 (2.3) 2 (10) 0.056
Throat swab 0 2 (10) 0.056
Venous blood culture 2 (4.7) 2 (10) 0.056
Duration of hospital stay mean ± SD (days) 22.2 ± 18.1 18.4 ± 13.4 0.392
No. of deaths 7 (16.3) 3 (15) 0.807
  1. Abbreviations: SD standard deviation