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Table 1 Comparisons between the patients’ demographics, phenotypic and genotypic characteristics of HA-MRSA and CA-MRSA in 2011 and 2012

From: Prevalence of methicillin-resistant Staphylococcus aureus (MRSA) infection and the molecular characteristics of MRSA bacteraemia over a two-year period in a tertiary teaching hospital in Malaysia

 

2011

2012

P value

Total

P value

 

N = 95 (%)

N = 114 (%)

N = 209 (%)

Age

 ≤ 50 years old

39 (41.1)

27 (23.7)

0.011

66 (31.6)

< 0.0001

 > 50 years old

52 (54.7)

86 (75.4)

0.002

138 (66)

 

 Not Known

4 (4.2)

1 (0.9)

 

5 (2.4)

 

Gender

 Female

30 (31.6)

44 (38.6)

0.312

74 (35.4)

< 0.0001

 Male

62 (65.3)

70 (61.4)

0.666

132 (63.2)

 

 Not Known

3 (3.2)

0 (0)

 

3 (1.4)

 

Source

 Blood

40 (42.1)

51 (44.7)

0.780

91 (43.5)

 

 Tissue

37 (38.9)

42 (36.8)

0.776

79 (37.8)

 

 CSF

3 (3.2)

0 (0)

0.092

3 (1.4)

 

 Pus, slough & Abscess

8 (8.4)

11 (9.6)

0.813

19 (9.1)

 

 Pericardial fluid

1 (1.1)

0 (0)

0.455

1 (0.5)

 

 Bullae fluid

0 (0)

1 (0.9)

1.000

1 (0.5)

 

 Synovial fluid

2 (2.1)

2 (1.8)

1.000

4 (1.9)

 

 Bone

4 (4.2)

7 (6.1)

0.758

11 (5.3)

 

SCCmec types

 SCCmec I

0 (0)

0 (0)

 

0 (0)

 

 SCCmec II

2 (2.1)

0 (0)

0.205

2 (0.9)

 

 SCCmec III

61 (64.2)

78 (68.4)

0.558

139 (66.5)

 

 SCCmec IV

  SCCmec IVa

5 (5.3)

4 (3.5)

0.735

9 (4.3)

 

  SCCmec IVb

5 (5.3)

0 (0)

0.018

5 (2.4)

 

  SCCmec IVc

0 (0)

0 (0)

 

0 (0)

 

  SCCmec IVd

0 (0)

0 (0)

 

0 (0)

 

  Novel subtypes

15 (15.8)

30 (26.3)

0.090

45 (21.5)

 

  SCCmec V

6 (6.3)

1 (0.9)

0.048

7 (3.3)

 

  Untypeable

1 (1.1)

1 (0.9)

1.000

2 (0.9)

 

Type of MRSA

HA-MRSA

44 (46.3)

79 (69.3)

0.001

123 (58.9)

 

 SCCmec II

2 (4.5)

0 (0)

0.126

2 (1.6)

 

 SCCmec III

35 (79.5)

56 (70.9)

0.392

91 (73.9)

 

 SCCmec IV

  SCCmec IVa

1 (2.3)

3 (3.8)

1.000

4 (3.3)

 

  SCCmec IVb

3 (6.8)

0 (0)

0.044

3 (2.4)

 

 Novel subtypes

3 (6.8)

19 (24.1)

0.025

22 (17.9)

 

 SCCmec V

0 (0)

1 (1.3)

1.000

1 (0.8)

 

CA-MRSA

41 (43.2)

24 (21.1)

0.001

65 (31.1)

 

 SCCmec III

23 (56.1)

13 (54.2)

1.000

36 (55.4)

 

  SCCmec IV

  SCCmec IVa

4 (9.8)

1 (4.2)

0.644

5 (7.7)

 

  SCCmec IVb

2 (4.9)

0 (0)

0.527

2 (3.1)

 

  Novel subtypes

7 (17.1)

10 (41.7)

0.042

17 (26.2)

 

 SCCmec V

4 (9.8)

0 (0)

0.288

4 (6.2)

 

 Untypeable

1 (2.4)

0 (0)

1.000

1 (1.5)

 

Not Known

10 (10.5)

11 (9.6)

 

21 (10)

 

 SCCmec III

3 (30)

9 (81.8)

 

12 (57.1)

 

 SCCmec IV

  Novel subtypes

5 (50)

1 (9.1)

 

6 (28.6)

 

 SCCmec V

2 (20)

0 (0)

 

2 (9.5)

 

  Untypeable

0 (0)

1 (9.1)

 

1 (4.8)

 

PVL gene

5 (5.3)

0 (0)

0.018

5 (2.4)

 

 Vancomycin MIC

  < 1.5 μg/mL

58 (61.1)

48 (42.1)

0.008

106 (50.7)

 

  ≥ 1.5 μg/mL

37 (38.9)

66 (57.9)

 

103 (49.3)

 
  1. CSF Cerebrospinal fluid
  2. Fisher’s exact test done for categorical variables, p value < 0.05 was considered to be statistical significant and are indicated by bold text
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