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Table 2 Demographic and sexual risk behavior characteristics of women and MSM with anorectal infections by Chlamydia trachomatis MLST cluster

From: No indication for tissue tropism in urogenital and anorectal Chlamydia trachomatis infections using high-resolution multilocus sequence typing

Variable

Cluster I

Cluster II

Cluster III

Cluster IV

Cluster V

Cluster VI

Residual

P I-III+R

P IV-VI

P IV+V

P total

 

n = 79

n = 56

n = 19

n = 93

n = 56

n = 40

n = 49

ompA Genovar

              

-

-

-

-

  B

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

1

(2.0%)

    

  D

0

(0.0%)

9

(16.1%)

1

(5.3%)

0

(0.0%)

56

(100.0%)

0

(0.0%)

12

(24.5%)

    

  E

79

(100.0%)

4

(7.1%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

8

(16.3%)

    

  F

0

(0.0%)

43

(76.8%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

2

(4.1%)

    

  G

0

(0.0%)

0

(0.0%)

0

(0.0%)

64

(68.8%)

0

(0.0%)

0

(0.0%)

10

(20.4%)

    

  H

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

4

(8.2%)

    

  I

0

(0.0%)

0

(0.0%)

15

(78.9%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

3

(6.1%)

    

  J

0

(0.0%)

0

(0.0%)

3

(15.8%)

29

(31.2%)

0

(0.0%)

0

(0.0%)

6

(12.2%)

    

  K

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

3

(6.1%)

    

  L2

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

3

(7.5%)

0

(0.0%)

    

  L2b

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

37

(92.5%)

0

(0.0%)

    

Demographics

                  

Gender

              

0.095

0.207

0.175

<0.001

  Male

5

(6.3%)

9

(16.1%)

0

(0.0%)

90

(96.8%)

56

(100.0%)

40

(100.0%)

7

(14.3%)

    

  Female

74

(93.7%)

47

(83.9%)

19

(100.0%)

3

(3.2%)

0

(0.0%)

0

(0.0%)

42

(85.7%)

    

Age in years (continuous)a

              

0.438

0.112

0.089

<0.001

  Median (IQR)

23

(21–27)

23

(20–28)

22

(21–24)

37

(29–45)

38

(29–45)

43

(35–46)

25

(20–29)

    

Age in years (categorical)a

              

0.656

0.359

0.951

<0.001

  <15

0

(0.0%)

1

(1.8%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

    

  15-19

10

(12.7%)

7

(12.7%)

3

(0.0%)

0

(0.0%)

0

(0.0%)

0

(0.0%)

5

(10.2%)

    

  20-24

40

(50.6%)

25

(45.5%)

12

(0.0%)

6

(6.9%)

5

(9.1%)

0

(0.0%)

19

(38.8%)

    

  25-29

14

(17.7%)

13

(23.6%)

2

(0.0%)

16

(18.4%)

9

(16.4%)

3

(7.7%)

15

(30.6%)

    

  30-39

12

(15.2%)

6

(10.9%)

1

(0.0%)

27

(31.0%)

18

(32.7%)

15

(38.5%)

5

(10.2%)

    

  ≥40

3

(3.8%)

3

(5.5%)

1

(0.0%)

38

(43.7%)

23

(41.8%)

21

(53.8%)

5

(10.2%)

    

Sexual behavior

                  

Number of partners in preceding 6 months (continuous)b

              

0.396

0.014

0.463

<0.001

  Median (IQR)

3

(2–6)

3

(2–6)

2

(1–3)

5

(3–20)

5

(3–10)

10

(10–20)

3

(1–6)

    

Receptive anal intercoursec

              

0.863

0.056

0.524

<0.001

  None

9

(16.7%)

4

(13.0%)

1

(10.5%)

2

(2.3%)

0

(0.0%)

0

(0.0%)

7

(14.3%)

    

  Safe

7

(9.0%)

7

(13.0%)

2

(10.5%)

27

(31.0%)

17

(30.9%)

4

(10.3%)

6

(12.2%)

    

  Unsafed

62

(74.4%)

43

(74.1%)

16

(78.9%)

58

(66.7%)

38

(69.1%)

35

(89.7%)

36

(73.5%)

    

Notified of STI by a sexual partnera

              

0.301

0.740

0.750

0.556

  No

69

(87.3%)

41

(74.5%)

15

(78.9%)

66

(75.9%)

43

(78.2%)

32

(82.1%)

40

(81.6%)

    

  Yes

10

(12.7%)

14

(25.5%)

4

(21.1%)

21

(24.1%)

12

(21.8%)

7

(17.9%)

9

(18.4%)

    

STI related symptomsa

              

0.778

0.007

0.548

0.014

  No

55

(69.6%)

34

(61.8%)

13

(68.4%)

55

(63.2%)

32

(58.2%)

13

(33.3%)

31

(63.3%)

    

  Yes

24

(30.4%)

21

(38.2%)

6

(31.6%)

32

(36.8%)

23

(41.8%)

26

(66.7%)

18

(36.7%)

    

HIV status

              

0.627

<0.001

0.556

<0.001

  Unknown

0

(0.0%)

2

(3.6%)

1

(5.3%)

9

(9.7%)

3

(5.4%)

3

(7.5%)

1

(2.0%)

    

  Negative

75

(94.9%)

52

(92.9%)

18

(94.7%)

53

(57.0%)

31

(55.4%)

3

(7.5%)

46

(93.9%)

    

  Positive

4

(5.1%)

2

(3.6%)

0

(0.0%)

31

(33.3%)

22

(39.3%)

34

(85.0%)

2

(4.1%)

    

Received money for sex in preceding 6 monthsa

              

0.822

0.581

0.425

<0.001

  No

65

(82.3%)

50

(90.9%)

17

(89.5%)

86

(98.9%)

55

(100.0%)

39

(100.0%)

42

(85.7%)

    

  Yes

5

(6.3%)

5

(9.1%)

2

(10.5%)

1

(1.1%)

0

(0.0%)

0

(0.0%)

7

(14.3%)

    
  1. Abbreviations: MSM men who have sex with men, STI sexual transmitted infection, HIV human immunodeficiency virus, IQR interquartile range, P P-value.
  2. Ptotal represents the p-value for the analysis over all clusters and the residual group; PI-III+R over clusters I to III and the residual group consisting predominantly of women; PIV-VI over clusters VI tot VI consisting predominantly of MSM including the LGV cluster. PIV-V over clusters IV and V consisting predominantly of MSM excluding the LGV cluster.
  3. Significant P-values in bold.
  4. aData is missing for 1 cluster II infection, 6 cluster IV infections, 1 cluster V infection, and 1 cluster VI infection.
  5. bData is missing for 3 cluster I infections, 4 cluster II infections, 45 cluster IV infections, 16 cluster VI infections, and 4 residual infections.
  6. cData is missing for 1 cluster I infection, 2 cluster II infections, 6 cluster IV infections 1 cluster V infection, and 1 cluster VI infection.
  7. dEight women reported receptive anal intercourse but condom use was unknown. These were all included as having unsafe receptive anal intercourse, as this would be the most likely explanation for infection.
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BMC Infectious Diseases

ISSN: 1471-2334

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