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Table 2 Risk factors for colonization with VRE in hospitalized patients with hematologic malignancies

From: Gut colonization with vancomicyn-resistant enterococci among patients with hematologic malignancies

Risk factors

Frequency (%) or mean ± SD

Univariate analysis

VRE colonized

non-VRE colonized

Total

OR (95% CI)

p-value

Demographics

 Age (years)a

74.31 ± 6.58

65.52 ± 13.37

–

3.697 (1.114–12.264)

0.025

 Gender: male: female

9 (69.23): 4 (30.77)

54 (65.25):42 (43.75)

109 (100)

0.571 (0.165–1.984)

0.374

 Mean length of stay (days)

11.15 ± 4.705

8.57 ± 5.11

–

1.524 (-5.602–0.440)

0.093

Primary hematologic disease (%)

 Myelodysplastic syndrome

3 (23.08)

20 (20.83)

23 (21.1)

1.140 (0.287–4.536)

0.852

 Non-hodgkin lymphoma

0

25 (26.04)

25 (22.94)

0.1 (0.01–1.81)

0.081

 Multiple myeloma

7 (53.85)

13 (13.54)

20 (18.35)

7.449 (2.161–25.669)

0.001

 Chronic lymphocytic leukemia

2 (15.38)

13 (13.54)

15 (13.76)

1.161 (0.231–5.843)

0.856

 Hodgkin Lymphoma

0

9 (9.38)

9 (8.26)

0.34 (0.02–6.21)

0.249

 Chronic erythremia

0

4 (4.17)

4 (3.67)

0.76 (0.04–14.94)

0.453

 Acute myeloblastic leukemia

1 (7.69)

4 (4.17)

5 (4.59)

1.917 (0.198–18.596)

0.569

 Acute lymphoblastic leukemia

0

3 (3.13)

3 (2.75)

0.99 (0.05–20.23)

0.518

 Acute myelomonocytic leukemia

0

2 (2.08)

2 (1.83)

1.4 (0.06–30.75)

0.599

 Acute promyelocytic leukemia

0

1 (1.04)

1 (0.92)

2.36 (0.09–60.87)

0.712

 Hairy-cell leukemia

0

1 (1.04)

1 (0.92)

2.36 (0.09–60.87)

0.712

 Chronic monocytic leukemia

0

1 (1.04)

1 (0.92)

2.36 (0.09–60.87)

0.712

Underling diseases (%)

 Chronic heart failure

9 (69.23)

48 (50)

53 (48.62)

2.250 (0.649–7.805)

0.193

 Chronic obstructive pulmonary disease

1 (7.96)

10 (10.42)

11 (10.09)

0.717 (0.084–6.107)

0.760

 Chronic renal failure

2 (15.38)

7 (7.29)

9 (8.26)

2.312 (0.426–12.550)

0.332

 Insulin-dependent diabetes mellitus

5 (38.46)

18 (18.75)

23 (21.1)

2.708 (0.792–9.259)

0.112

 Obesity

2 (15.38)

14 (14.58)

16 (14.68)

1.065 (0.213–5.326)

0.939

 Chemotherapy

8 (61.54)

45 (46.88)

53 (48.62)

1.813 (0.553–5.943)

0.326

 Corticosteroids use

7 (53.85)

39 (40.63)

46 (42.2)

1.705 (0.532–5.461)

0.369

Medications prior the hospital admission (%)

 Cardiovascular medications

9 (69.23)

46 (47.92)

55 (50.46)

2.446 (0.705–8.485)

0.149

 Endocrine medications

6 (46.15)

20 (20.83)

26 (23.85)

2.375 (0.700–8.053)

0.156

 COPD medications

1 (7.96)

10 (10.42)

11 (10.09)

0.717 (0.084–6.107)

0.760

 Nonsteroids

2 (15.38)

14 (14.58)

16 (14.68)

1.065 (0.213–5.326)

0.939

 Other medicationsb

1 (7.96)

3 (3.13)

4 (3.67)

2.583 (0.248–26.863)

0.403

Antibiotic use in last 30 days and during the current hospital stay (%)

 3rd generation cephalosporins

1 (7.96)

3 (3.13)

4 (3.67)

2.583 (0.248–26.863)

0.403

 Fluroquinolones

1 (7.96)

2 (2.08)

3 (2.75)

3.917 (0.330–46.514)

0.319

 Macrolides

0

4 (4.17)

4 (3.67)

0.76 (0.04–14.94)

0.453

 Antifungal drugs

0

2 (2.08)

2 (1.83)

1.4 (0.06–30.75)

0.599

  1. SD standard deviation, OR odds ratio, CI confidence interval
  2. aAge (years) For the goals of statistical analysis, the studied 96 patients were divided in the followed 7 age groups: 18–29; 30–39; 40–49; 50–59; 60–69; 70–79; 80–89. Statistical significance was found only between the presence of colonization and the age of patients 70–79 years (p = 0.025)
  3. bOther medications (antiallergic drugs: n = 3; antidepressants: n = 1)