TABLE 1.

Comparison of A. calcoaceticus-A. baumannii complex-colonized and -infected patientsa

Patient characteristicValue for group:
Colonized (n = 44)Infected (n = 63)Total (n = 107)
Mean age (yr) (SD)47.8 (18.3)44.7 (15.2)46.0 (16.8)
No. of males (%)34 (77.3)44 (69.8)78 (75.7)
Race [no. (%)]
    African-American17 (38.7)25 (39.7)42 (39.2)
    White, non-Hispanic9 (20.5)16 (25.4)25 (23.3)
    Hispanic, any race16 (30.4)18 (28.6)34 (31.7)
    Asian2 (4.5)4 (6.3)6 (5.6)
Hospital acquired [no. (%)]37 (84.1)62 (98.4)99 (92.5)b
In ICU when organism was isolated [no. (%)]33 (75.0)62 (98.4)95 (88.8)b
Mean time from ICU admission to isolate isolation (days) (SD)15.3 (10.7)18.7 (13.0)17.4 (12.3)
Mechanically ventilated when organism isolated [no. (%)]24 (54.5)47 (74.6)71 (66.4)b
Surgical procedure during hospitalization [no. (%)]31 (70.5)55 (87.3)86 (80.4)b
Central bloodstream catheter present when organism isolated [no. (%)]28 (63.6)48 (76.2)76 (71.0)
Renal replacement [no. (%)]11 (25.0)20 (31.7)31 (28.9)
Received expanded-spectrum cephalosporin 30 days prior to initial organism isolation [no. (%)]26 (59.1)54 (85.7)80 (74.8)b
Received quinolone 30 days prior to initial organism isolation [no. (%)]9 (20.5)25 (39.7)34 (31.8)b
Mean modified APACHE II score (SD)12.4 (7.7)14.2 (8.5)13.5 (8.2)
Isolation of multidrug-resistant organism [no. (%)]25 (29.8)59 (93.7)84 (78.5)b
Died during hospitalization [no. (%)]6 (13.6)23 (36.5)29 (25.2)b
  • a Characteristics of infected versus colonized patients were compared with a Student's t test or Wilcoxon rank sum test for continuous variables and with χ2 tests for categorical variables.

  • b P < 0.05 for the colonized versus infected patients.