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Table 2 Characteristics of included patients (n = 67)

From: Mortality related to Verona Integron-encoded Metallo-β-lactamase-positive Pseudomonas aeruginosa: assessment by a novel clinical tool

Characteristic Total Definitely related Probably related Possibly related Not related Unknown
No. of patients (%) 67 (100) 15 (22.4) 2 (3.0) 15 (22.4) 34 (50.7) 1 (1.5)
Male gender (%) 33 (49.3) 10 (66.7) 2 (100) 7 (46.7%) 13 (38.2%) 1 (100)
Mean age at time of first isolation of VIM-PA (range, SD) 56.6 (18–82, 14.2) 53.0 (20–71, 13.3) 46.1 (40–52, 9.0) 58.3 (34–82, 12.6) 57.5 (18–80, 15.1) 79.1
Mean age at time of death (range, SD) 57.0 (18–82, 14.0) 53.3 (20–71, 13.5) 46.3 (40–53, 8.8) 58.8 (37–82, 11.8) 57.8 (18–81, 15.0) 79.1
Median LOS before first VIM-PA culture, days, (range) 23 (0–244) 22 (1–244) 85 (80–90) 37 (4–126) 22 (0–202) 0
28-day mortality (%) 36 (53.7) 11 (73.3) 0 (0) 7 (46.7) 17 (50.0) 1 (100)
1-year mortality (%) 61 (91.0) 14 (93.3) 2 (100) 14 (93.3) 30 (88.2) 1 (100)
Location of first VIM-PA; ICU (%) 49 (73.1) 13 (86.7) 0 (0) 13 (86.7) 23 (67.6) 0 (0)
Ward of acquisition; ICU (%) 47 (70.1) 13 (86.7) 0 (0) 12 (80.0) 22 (64.7) 0 (0)
Location of death; ICU (%) 43 (64.2) 14 (93.3) 1 (50.0) 9 (60.0) 19 (55.9) 0 (0)
Nosocomial acquisition 67 (100) 15 (100) 2 (100) 15 (100) 34 (100) 1 (100)
Source of infection
 Pneumonia (%) 15 (22.4) 7 (46.7) 1 (50.0) 7 (46.7) 0 (0) 0 (0)
 Gastro-intestinal (%) 11 (16.4) 4 (26.7) 1 (50.0) 6 (40.0) 0 (0) 0 (0)
 Pneumonia and/or gastro-intestinal (%) 2 (3.0) 1 (6.7) 0 (0) 1 (6.7) 0 (0) 0 (0)
 Pneumonia and/or skin and soft tissue (%) 2 (3.0) 2 (13.3) 0 (0) 0 (0) 0 (0) 0 (0)
 Gastro-intestinal and/or cardiovascular system (%) 1 (1.5) 0 (0) 0 (0) 1 (6.7) 0 (0) 0 (0)
 Gastro-intestinal and/or skin and soft tissue (%) 1 (1.5) 1 (6.7) 0 (0) 0 (0) 0 (0) 0 (0)
 No infection or undetermined (%) 35 (52.2) 0 (0) 0 (0) 0 (0) 34 (100) 1 (100)
Charlson comorbidity scorea
 Median Charlson score (range) 3 (0–9)b 2 (0–6)c 0.5 (0–1) 2 (0–5) 4 (1–9)d 4
  1. Abbreviations: No.; number, SD; standard deviation, ICU; intensive care unit, LOS; length of stay, VIM-PA; Verona Integron-encoded Metallo-β-lactamase (VIM)-positive Pseudomonas aeruginosa
  2. a Quan H, Li B, Couris CM, Fushimi K, Graham P, Hider P, et al. Updating and validating the Charlson comorbidity index and score for risk adjustment in hospital discharge abstracts using data from 6 countries. Am J Epidemiol. 2011;173(6):676–82
  3. bFor 2 patients data are missing
  4. cFor 1 patient data are missing
  5. dFor 1 patient data are missing