Table 1 Demographic characteristics, laboratory, and disease severity for the study population
Variable | Total, n (136) | Survivor, n (82) | Non-survivor, n (54) | P value |
|---|---|---|---|---|
Age (year) | 58.80 ± 10.53 | 57.68 ± 11.30 | 60.50 ± 9.06 | 0.127 |
Sex | ||||
 Male | 87 (63.9%) | 55 (67.1%) | 32 (59.3%) | 0.368 |
 Female | 49 (36%) | 27 (32.9%) | 22 (40.7%) | |
WBC (× 1000/mm3) | 12.87 ± 4.74 | 12.73 ± 4.28 | 13.97 ± 5.41 | 0.685 |
Hg (gm/dl) | 12.11 ± 2.19 | 12.51 ± 2.03 | 11.65 ± 2.22 | 0.022 |
PLT (× 1000/mm3) | 205.27 ± 104.27 | 210.36 ± 75.36 | 197.54 ± 137.52 | 0.419 |
RDW (%) | 14.06 ± 2.83 | 12.94 ± 1.87 | 15.75 ± 3.19 | 0.000 |
NLR (%) | 9.67 ± 4.00 | 8.51 ± 3.74 | 11.43 ± 3.76 | 0.000 |
Serum urea (mg/dL) | 9.75 ± 5.15 | 6.54 ± 3.29 | 11.42 ± 5.19 | 0.008 |
Serum creatinine(μmol/L) | 120.56 ± 70.11 | 112.94 ± 68.24 | 132.36 ± 71.97 | 0.116 |
Serum albumin (g/L) | 24.68 ± 9.90 | 25.70 ± 10.45 | 23.11 ± 8.86 | 0.139 |
SOFA score at admission | 4.25 ± 1.79 | 3.68 ± 1.39, 3 (2–7) | 5.41 ± 1.92, 5 (2–10) | 0.000 |
SOFA score at diagnosis of VAP | 5.67 ± 2.38 | 4.60 ± 1.48, 4 (3–10) | 7.30 ± 2.56, 8 (2–11) | 0.000 |
Duration of mechanical ventilation (days) | 12.49 ± 4.95 | 11.12 ± 3.74 | 14.57 ± 5.81 | 0.000 |
Time of occurrence of VAP (days) | 6.25 ± 2.58 | 5.56 ± 2.37 | 7.17 ± 2.63 | 0.001 |
Length of ICU stay (days) | 15.76 ± 5.72 | 13.89 ± 4.53 | 18.61 ± 6.18 | 0.000 |