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Table 1 Comparison of characteristics of S. aureus bacteremia across ethnic populations

From: Impact of ethnicity and socio-economic status on Staphylococcus aureus bacteremia incidence and mortality: a heavy burden in Indigenous Australians

 

Indigenous (n=536)

Asian (n=318)

Caucasian (n=6346)

Polynesian (n=123)

Other (n=216)

P

Demographic traits

      

Age (median)

44

55

65

48

58

<0.001a

Age (mean)

40

(20)

52

(25)

61

(23)

43

(22)

51

(25)

<0.001b

Sex (Male)

321

(60)

206

(65)

4179

(66)

80

(65)

144

(67)

0.09

IRSAD (mean)

4.6

(3.2)

6.9

(3.0)

6.7

(2.7)

4.7

(2.8)

6.3

(2.7)

<0.001c

Acquistion

          

<0.001d

CO

154

(29)

58

(19)

1235

(20)

23

(21)

33

(16)

 

CO HCA

243

(46)

104

(34)

2517

(42)

48

(43)

86

(42)

 

Nosocomial

131

(25)

141

(47)

2306

(38)

40

(36)

85

(42)

 

Risk factors

           

Dialysis

139

(26)

44

(14)

541

(9)

25

(20)

34

(16)

<0.001

IDU

30

(6)

17

(7)

369

(8)

5

(7)

11

(8)

0.86e

Device related

162

(32)

130

(43)

2145

(36)

39

(34)

80

(39)

0.02f

Primary focus

           

Endocarditis

20

(4)

19

(6)

378

(6)

5

(4)

11

(5)

0.25

Bone/joint

91

(17)

40

(13)

782

(12)

21

(17)

22

(10)

0.01

SSTI

128

(24)

57

(18)

1152

(18)

27

(22)

51

(24)

0.005

Outcomes

           

ICU

91

(17)

43

(14)

763

(12)

19

(15)

19

(9)

0.004

Mortality 7 days

15

(3)

24

(8)

636

(10)

8

(7)

9

(4)

<0.001

Mortality 30 days

37

(7)

49

(17)

1135

(19)

12

(12)

23

(12)

<0.001g

  1. Note. Data are number (%) of patients and means (standard deviations). IRSAD, Index of Relative Socio-economic Advantage or Disadvantage; CO, community-onset; HCA, healthcare-associated; IDU, intravenous drug using; SSTI, skin and soft tissue infection; ICU, intensive care unit.
  2. a Kruskal-Wallis test; b Analysis of variance test (F=123.7, df=4); c Analysis of variance test (F=89.3, df=4); d χ2 test for 3x5 table. Missing data for Indigenous – 8, Asian – 15, Caucasian – 288, Polynesian – 12, Other – 12; e Missing data for Indigenous – 54, Asian – 75, Caucasian – 1474, Polynesian - 48, Other – 71; f Missing data for Indigenous – 23, Asian – 14, Caucasian – 370, Polynesian – 8, Other – 12; g Missing data for Indigenous – 17, Asian – 30, Caucasian – 415, Polynesian – 19, Other – 19.