Table 4 Univariate and multivariate logistic regression analyses for factors associated with any-, high-risk and multiple anal HPV infections

 Male

124 (89.2)

Ref

97 (88.2)

Ref

99 (87.6)

Ref

 Transgender (MTF)

15 (10.8)

1.0

13 (11.8)

5.3 (1.16–24.16)

0.031

14 (12.4)

10.9 (1.40–84.63)

0.022

 Black

46 (33.1)

Ref

Ref

40 (36.4)

Ref

Ref

39 (34.5)

Ref

 Coloured

35 (25.2)

0.4 (0.18–0.88)

0.023

0.5 (0.15–1.42)

0.177

24 (21.8)

0.3 (0.15–0.67)

0.003

0.4 (0.13–0.96)

0.042

26 (23.0)

0.4 (0.19–0.82)

0.013

 White

55 (39.6)

1.2 (0.50–2.83)

0.685

0.5 (0.17–1.74)

0.303

45 (40.9)

0.9 (0.44–1.95)

0.847

0.5 (0.19–1.46)

0.219

47 (41.6)

1.2 (0.54–2.42)

0.717

 Other

3 (2.2)

0.9 (0.08–8.85)

0.890

0.2 (0.01–2.14)

0.162

1 (0.9)

0.2 (0.02–1.62)

0.121

0.0 (0.00–0.55)

0.016

1 (0.9)

0.2 (0.02–1.75)

0.137

 City/suburbs

96 (69.1)

Ref

73 (66.4)

Ref

76 (67.3)

Ref

 Informal settlement

33 (23.7)

1.6 (0.72–3.73)

0.236

28 (25.5)

1.8 (0.88–3.73)

0.108

28 (24.8)

1.7 (0.80–3.42)

0.171

 Outside city

10 (7.2)

1.0

9 (8.2)

8.1 (1.00–65.96)

0.050

9 (8.0)

7.5 (0.92–60.49)

0.060

 No income

24 (17.3)

Ref

18 (16.4)

Ref

20 (17.7)

Ref

 Income

115 (82.7)

2.1 (1.02–4.44)

0.044

92 (83.6)

1.9 (0.94–3.85)

0.072

93 (82.3)

1.6 (0.80–3.23)

0.187

 Men and women

11 (2.9)

Ref

Ref

8 (7.3)

Ref

Ref

7 (6.2)

Ref

Ref

 Men only

128 (92.1)

15.9 (6.95–36.24)

<0.001

10.9 (3.88–30.81)

<0.001

102 (92.7)

8.8 (3.75–20.41)

<0.001

4.6 (1.63–12.74)

0.005

106 (93.8)

11.7 (4.82–28.39)

<0.001

5.5 (1.92–15.51)

0.001

 No

40 (28.8)

Ref

Ref

30 (27.3)

Ref

Ref

34 (30.1)

Ref

 Yes

99 (71.2)

2.9 (1.50–5.57)

0.002

4.7 (1.79–12.43)

0.002

80 (72.7)

2.4 (1.29–4.32)

0.006

3.1 (1.35–7.07)

0.006

79 (69.9)

1.8 (0.98–3.28)

0.057

 No

111 (79.9)

Ref

85 (77.3)

Ref

88 (77.9)

Ref

 Yes

28 (20.1)

1.9 (0.75–4.98)

0.172

25 (22.7)

2.4 (1.03–5.36)

0.042

25 (22.1)

2.2 (0.95–4.97)

0.064

 No

92 (66.2)

Ref

74 (67.3)

Ref

79 (69.9)

Ref

 Paid and/or received money

47 (33.8)

0.6 (0.29–1.05)

0.072

36 (32.7)

0.6 (0.34–1.10)

0.100

34 (30.1)

0.5 (0.25–0.82)

0.010

 Negative

61 (43.9)

Ref

Ref

41 (37.3)

Ref

Ref

40 (35.4)

Ref

Ref

 Positive

78 (56.1)

8.2 (3.46–19.50)

<0.001

4.1 (1.52–11.22)

0.006

69 (62.7)

6.8 (3.50–13.36)

<0.001

4.0 (1.82–8.65)

<0.001

73 (64.6)

10.0 (4.86–20.74)

<0.001

6.9 (3.10–15.42)

<0.001

 Never practised

24 (17.3)

Ref

14 (12.7)

Ref

Ref

14 (12.4)

Ref

Ref

 Practised

115 (82.7)

7.7 (3.77–15.61)

<0.001

3.3 (1.36–8.09)

0.009

96 (87.3)

11.0 (4.97–24.21)

<0.001

4.3 (1.80–10.13)

0.001

99 (87.6)

11.3 (5.13–24.95)

<0.001

4.2 (1.79–9.65)

0.001

 Negative

125 (89.9)

Ref

98 (89.1)

Ref

100 (88.5)

Ref

 Positive

14 (10.1)

1.0

12 (10.9)

4.8 (1.05–22.25)

0.043

13 (11.5)

10.0 (1.28–78.19)

0.028