Table 3 Phenotypic and molecular characteristics of S. aureus carriage among study participants, in Guangdong, China.

From: Livestock-associated methicillin and multidrug resistant S. aureus in humans is associated with occupational pig contact, not pet contact

Characteristics

Total (n = 146)

Pig worker (n = 37)

Pet-owning worker(n = 23)

Control worker [n = 86(%)]

p-Value

p

p 1

p2

p3

Tetracycline-resistant S.aureus

68(46.6)

33(89.2)

6(26.1)

29(33.7)

<0.001

<0.001

<0.001

0.486

Tetracycline-resistant MRSA

32(21.9)

24(64.9)

2(8.7)

6(7.0)

<0.001

<0.001

<0.001

0.779

S. aureus CC9

17(11.6)

16(43.2)

1(4.4)

0(0.0)

<0.001

0.001

<0.001

0.052

MRSA CC9

16(11.0)

16(43.2)

0(0.0)

0(0.0)

<0.001

<0.001

<0.001

—

scn-negative S. aureus

64(43.8)

26(70.3)

5(21.7)

33(38.4)

<0.001

<0.001

0.001

0.137

scn-negative MRSA

31(21.2)

23(62.2)

1(4.4)

7(8.1)

<0.001

<0.001

<0.001

0.536

chp-negative S. aureus

105(71.9)

31(83.8)

16(69.6)

58(67.4)

0.174

0.194

0.063

0.846

chp-negative MRSA

34(23.3)

23(62.2)

2(8.7)

9(10.5)

<0.001

<0.001

<0.001

0.802

sak-negative S. aureus

66(45.2)

26(70.3)

5(21.7)

35(40.7)

<0.001

<0.001

0.003

0.094

sak-negative MRSA

31(21.2)

24(64.9)

1(4.4)

6(7.0)

<0.001

<0.001

<0.001

0.648

sea-negative S. aureus

130(89.0)

35(94.6)

17(73.9)

78(90.7)

0.033

0.022

0.498

0.033

sea-negative MRSA

39(26.7)

25(67.6)

2(8.7)

12(14.0)

<0.001

<0.001

<0.001

0.503

  1. Note. Values are expressed as number of S. aureus isolates (the proportion of S. aureus isolates), except where specified otherwise.
  2. MRSA, methicillin-resistant S. aureus.
  3. p: Comparison among pig workers, pet-owning workers and control workers.
  4. p1: Comparison between pig workers and pet-owning workers.
  5. p2: Comparison between pig workers and control workers.
  6. p3: Comparison between pet-owning workers and control workers.
  7. -: No estimate of p value is provided due to no occurrence of the outcome of interest in the two groups.
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