Table 3 Distribution of categorical potential confounders in the weighted and unweighted study samples

Black race (STI)

62

0.39

47

0.02

Black race (No STI)

43

46

Reported drug use (STI)

58

0.09

55

<0.01

Reported drug use (No STI)

54

54

Reported RAI (STI)

85

0.38

79

0.18

Reported RAI (No STI)

69

71

Reported black partners¹ (STI)

52

0.27

41

0.02

Reported black partners¹ (No STI)

38

40

Reported UAI¹ (STI)

75

0.23

61

−0.09

Reported UAI¹ (No STI)

64

66

Non-rectal STI diagnosis² (STI)

23

0.45

10

0.02

Non-rectal STI diagnosis² (No STI)

7

10