Table 3

Differences in clinical characteristics between survivors and non survivors (Univariate analysis)
Clinical features Survivors (n = 93) Non survivors (n = 96) p value
Demographic factors
  Mean age 59.3 ± 18.6 61.0 ±17.4 0.52
  ≥ 65 years age 48 (52%) 52 (54%) 0.73
  Gender male/female 55/38 55/41 0.79
ATS major criteria
  Use of mechanical   ventilation 18 (19%) 29 (30%) 0.08
  Septic shock 23 (25%) 59 (61%) < 0.001
History
  Prior antibiotic use 14 (15%) 26 (27%) 0.04
  Comorbids 76 (82%) 84 (88%) 0.27
Physical examination findings
  Blood pressure ≤   90/60 mmHg 25 (27%) 30 (31%) 0.51
  Pulse ≥ 120/min 32 (34%) 37 (39%) 0.55
  Respiratory Rate   30/min 56 (60%) 57 (59%) 0.95
Laboratory findings
  Blood urea nitrogen ≥  30 mg/dl 44 (47%) 59 (61%) 0.03
  Creatinine > 1.5 mg/dL 48 (52%) 53 (55%) 0.25
  Hematocrit <30% 22 (24%) 37 (39%) 0.03
  Na <130 mmol/L 22 (24%) 28 (29%) 0.39
  Arterial pH <7.35 28 (30%) 32 (33%) 0.63
Radiographic findings
  Pleural effusion 32 (34%) 38 (40%) 0.46
  Bilateral involvement 36 (39%) 53 (55%) 0.07
  Multilobar involvement 28 (30%) 38 (40%) 0.22
Mean APACHE II score 19.1 ±6.0 28.2 ±7.0 <0.001
APACHE II score ≥ 20 38 (41%) 80 (83.0%) <0.001

Khawaja et al.

Khawaja et al. BMC Infectious Diseases 2013 13:94   doi:10.1186/1471-2334-13-94

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