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Table 2 Risk factors for subsequent MRSA infection in MRSA nasal carrier cohorts

From: Comparison of subsequent infection in methicillin-resistant Staphylococcus aureus nasal carriers between ST72 community-genotype and hospital genotypes: a retrospective cohort study

Variable

No. (%)

P

Adjusted OR (95% CI)

P

Patients with subsequent MRSA infection (n = 46)

Patients with no subsequent MRSA infection (n = 308)

Female gender

16 (34.8)

122 (39.6)

0.531

  

Age, median (IQR)

57.5 (41.0–67.0)

52.5 (5.5–66.0)

0.111

  

ST72 MRSA

26 (56.5)

172 (55.8)

0.931

  

Reason for nasal MRSA screening

 Transfer from other hospital

24 (52.2)

104 (33.8)

0.015

2.375 (1.094–5.157

0.029

 Pre-operative screening

11 (23.9)

108 (35.1)

0.135

  

 MRSA isolated from clinical specimens

23 (50.0)

9 (2.9)

<0.001

33.235 (13.102–84.303)

<0.001

 Carriage of VRE

2 (4.3)

21 (6.8)

0.752

  

 Undergoing HD or CAPD

3 (6.5)

12 (3.9)

0.425

  

Admission due to infection other than MRSA infection

17 (37.0)

54 (17.5)

0.002

0.576 (0.240–1.387)

0.219

Comorbidity

 Solid tumor

9 (16.9)

63 (20.5)

0.889

  

 Cardiovascular

10 (21.7)

63 (20.5)

0.841

  

 Diabetes mellitus

11 (23.9)

47 (15.3)

0.198

  

 Liver disease

6 (13.0)

29 (9.4)

0.442

  

 Neurologic disease

4 (8.7)

40 (13.0)

0.631

  

 Chronic kidney disease

8 (17.4)

32 (10.4)

0.162

  

 Solid organ transplantation

2 (4.3)

8 (2.6)

0.625

  

 Chronic lung disease

7 (15.2)

8 (2.6)

0.001

4.870 (1.193–19.872)

0.027

 Hematologic malignancy

3 (6.5)

12 (3.9)

0.425

  

 CAPD

0 (0.0)

3 (1.0)

1.000

  

 HSCT

0 (0.0)

1 (0.3)

1.000

  

Severity of underlying disease

  

0.335

  

 Rapidly fatal

3 (6.5)

11 (3.6)

   

 Ultimately fatal

26 (56.5)

152 (49.4)

   

 Nonfatal

17 (37.0)

145 (47.1)

   
  1. MRSA methicillin-resistant Staphylococcus aureus, OR odds ratio, IQR Interquartile range, ST sequence type, VRE vancomycin-resistant Enterococcus, HD hemodialysis, CAPD continuous ambulatory peritoneal dialysis, HSCT hematopoietic stem cell transplantation