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Table 1 Factors associated with shorter TTP. Univariate and multivariate analysis.

From: Further considerations on the clinical applicability of time to positivity as a prognostic tool for catheter-related Pseudomonas aeruginosa bloodstream infections

Characteristics

TTP < 15 h (N = 600)

TTP > 15 h (N = 577)

p-value

Multivariate analysis

OR

p-value

Age > 64 years

297 (49.5)

314 (54.4)

0.1

  

Sex (female)

233 (38.8)

164 (28.4)

 < 0.001

  

Comorbidities

Foreign body

239 (39.8)

268 (46.4)

0.025

  

Diabetes mellitus

116 (19.3)

129 (22.4)

0.22

  

Chronic pneumopathy

63 (10.5)

68 (11.8)

0.52

  

CKD

96 (16)

75 (13)

0.16

  

CKD hemodialysis

41 (6.8)

21 (3.6)

0.02

  

Chronic liver disease

40 (6.7)

34 (5.9)

0.63

  

Solid neoplasm

147 (24.5)

148 (25.6)

0.7

  

Hematologic malignancy

127 (21.2)

107 (18.5)

0.27

  

Neutropenia

131 (21.8)

84 (14.9)

0.013

  

Solid organ transplantation

78 (13)

97 (16.8)

0.07

  

Stem cell transplantation

38 (6.3)

30 (5.2)

0.45

  

HIV

21 (3.5)

19 (3.3)

0.9

  

Corticosteroids

224 (37.3)

169 (29.3)

 < 0.001

  

Admission data

Previous admission (< 1 month)

183 (31.5)

199 (35.5)

0.15

  

Nosocomial bacteremia

550 (53.5)

478 (46.5)

 < 0.001

  

Bladder catheterization

193 (33)

225 (40.1)

0.02

  

Intravascular catheter

489 (81.5)

370 (64.1)

 < 0.001

2.4 [1.5–3.7]

 < 0.001

Microbiologic data

PAE isolated in aerobic 2/2 vials

352 (58.8)

236 (40.1)

 < 0.001

1.5 [1.2–1.8]

 < 0.001

Sensible to ceftazidime

458 (81.6)

377 (72.4)

 < 0.001

  

Sensible to piperacillin

402 (81.4)

337 (69.2)

 < 0.001

  

Sensible to gentamycin

381 (81.2)

330 (73.3)

0.005

  

Sensible to amikacin

548 (97.3)

526 (96.9)

0.7

  

Sensible to ciprofloxacin

411 (72.4)

348 (64.9)

0.01

  

Sensible to meropenem

355 (73.8)

297 (63.2)

 < 0.001

  

Susceptible PAE

377 (63.9)

317 (56.7)

0.01

  

MDR PAE

55 (9.2)

88 (15.3)

0.002

0.4 [0.2–0.7]

 < 0.001

Active antibiotic (during bacteremia)

66 (11)

90 (15.6)

0.02

0.35 [0.2–0.5]

 < 0.001

Source of infection

Primary bacteremia

127 (21.5)

127 (22.3)

0.8

  

Catheter-related

281 (47.5)

112 (19.6)

 < 0.001

2.9 [2.1–4]

 < 0.001

Respiratory

77 (12.8)

84 (14.6)

0.4

  

Abdominal

14 (2.4)

33 (5.8)

0.004

  

Biliary tract

19 (3.2)

42 (7.4)

0.002

  

Urinary tract

49 (8.3)

130 (22.8)

 < 0.001

0.5 [0.3–0.8]

0.008

  1. CKD, chronic kidney disease, HIV; Human immunodeficiency virus; MDR, Multi—drug resistant strain; PAE, Pseudomonas aeruginosa