Table 2 Correlates of CAI^a among 21,732 MSM sexual encounters in 10 Indian cities

Individual-level characteristics

  Age per 10 years

0.98

0.95- 1.02

1.03

0.996–1.07

Marital Status

  Never married

REF

REF

  Currently married/ living with a partner

0.79

0.74–0.84

0.82

0.76–0.88

  Divorced/ widowed/ separated/ other

1.08

0.97–1.21

0.99

0.88–1.11

Education

  Primary school or less

REF

REF

  Secondary school

0.98

0.90–1.06

0.93

0.86–1.01

  High school or more

0.82

0.75–0.90

0.81

0.74–0.89

Sexual identity

  Panthi

REF

REF

  Kothi

0.79

0.73–0.87

0.88

0.78–0.99

  Double-decker

1.01

0.94–1.09

1.02

0.93–1.11

  Gay/ MSM

0.63

0.45–0.88

0.76

0.57–1.01

  Bisexual

0.89

0.79–1.00

0.94

0.85–1.05

Monthly income

  < $50

REF

REF

  $50- $115

1.11

0.98–1.25

1.00

0.89–1.13

  > $115

1.12

1.00–1.24

1.01

0.91–1.22

  HIV treatment literacy

0.71

0.66–0.77

0.80

0.74–0.86

  History of sex work

1.19

1.11–1.27

1.13

1.06–1.20

  Number of partners in prior 6 months (per each increase in partner)

1.00

0.996–1.00

–

–

  Childhood sexual abuse

1.06

0.99–1.14

–

–

  Forced sex

1.02

0.95–1.10

–

–

  Ever sex with a woman

0.99

0.92–1.06

–

–

  Median AUDIT score (per 10-point increase)

1.25

1.22–1.29

–

–

  Substance use in prior 6 months (excluding marijuana)

1.27

1.18–1.37

1.06

0.99–1.15

  Substance use in prior 6 months (including marijuana)

1.23

1.15–1.32

–

–

  Syphilis

0.88

0.72–1.06

–

–

  STI symptoms in prior 6 months

1.15

1.03–1.29

1.17

1.04–1.31

HSV-2 status

  HSV -

REF

REF

  HSV-1 + 

0.83

0.77–0.91

0.95

0.87–1.03

  HSV-2 + 

1.05

0.91–1.21

1.10

0.95–1.28

HIV status of participant

  HIV-

REF

REF

  HIV + , undetectable viral load

0.59

0.47–0.73

0.75

0.61–0.91

  HIV + , detectable viral load

0.77

0.67–0.90

0.89

0.77–1.04

Partner-level characteristics

Partner Sexual identity

  Panthi

REF

REF

  Kothi

0.87

0.80- 0.93

1.07

0.98–1.16

  Double-decker

1.07

1.01–1.15

1.06

0.98–1.15

  Gay/ MSM

0.86

0.74–0.99

0.96

0.84–1.10

  Bisexual

0.74

0.61–0.90

0.96

0.80–1.13

  Hijra

1.50

1.39–1.63

1.39

1.28–1.52

Relationship to partner

  Boyfriend

REF

REF

  Casual/ one-time partner

1.04

0.98–1.11

0.98

0.92–1.05

  Commercial sex worker

1.21

1.11–1.32

0.98

0.89–1.08

Partner’s HIV status

  Negative

REF

REF

  Positive

0.57

0.42- 0.76

0.76

0.56–1.03

  Unknown

1.42

1.34- 1.50

1.34

1.27–1.43

Use of alcohol/ drugs prior to intercourse with partner

  Never

REF

REF

  Sometimes

1.54

1.44–1.64

1.42

1.33–1.51

  Always

1.50

1.40–1.61

1.31

1.23–1.41

Frequency of intercourse with partner

  Less than weekly

REF

REF

–

  At least weekly

1.05

1.00–1.11

1.05

1.00–1.11