Table 3 Prevalence of S. aureus colonization by demographic and co-morbid factors

Age

< 50 years

10

3

30.0

(9.3–60.6)

0.639

50–70

81

28

34.6

(24.9–45.3)

> 70 years

28

7

25.0

(11.9–42.9)

Sex

Male

30

9

30.0

(16.0–47.7)

0.793

Female

89

29

32.6

(23.5–42.8)

Race

Black

79

26

32.9

(23.3–43.7)

0.877

Colored

6

2

33.3

(7.7–71.4)

Indian

6

1

16.7

(1.9–55.8)

White

28

9

32.1

(17.2–50.5)

Domicile

Rural

8

3

37.5

(11.9–70.5)

0.727

Urban

111

35

31.5

(23.4–40.6)

BMI (kg/m²)

< 30

44

17

38.6

(25.3–53.4)

0.484

30–39

53

15

28.3

(17.6–41.3)

> 40

22

6

27.3

(12.3–47.8)

Previous TJA

Yes

38

15

39.5

(25.2–55.3)

0.089

No

81

23

28.4

(19.5–38.8)

Smoking

Yes

95

30

31.6

(22.9–41.4)

0.869

No

24

8

33.3

(17.2–53.2)

Alcohol

Yes

93

30

32.3

(23.4–42.2)

0.886

No

26

8

30.8

(15.8–49.8)

HIV

Positive

25

10

42.1

(22.3–64.1)

0.065

Negative

94

28

30

(21.7–39.5)

Diabetes

Yes

19

6

32

(14.4–53.9)

0.971

No

100

32

31.6

(23.5–41.6)

RA

Yes

102

29

28.4

(20.4–37.7)

0.45

No

17

9

52.9

(30.3–74.6)

Hypertension

Yes

43

15

34.9

(22–49.7)

0.604

No

76

23

30.3

(20.8–41.2)