Table 2 Multiple logistic regression results of determinants of HIV infection who admitted to Imam Khomeini Voluntary Counseling and Testing (n = 20,128), Tehran, Iran (2004–2018)

Age

1.05***

1.05, 1.06

1.03***

1.01, 1.05

 Female

ref

ref

ref

ref

 Male

1.67***

1.50, 1.86

1.24**

1.05, 1.47

 Married

ref

ref

ref

ref

 Single

1.00

0.84, 1.20

0.89

0.75, 1.05

 Widowed

1.53

0.96, 2.43

1.33

0.86, 2.05

 Divorced

0.83***

0.68, 1.01

0.80**

0.65, 0.98

 Other

0.62***

0.45, 0.87

0.59***

0.44, 0.79

 No

ref

ref

ref

ref

 Yes

8.24***

7.41, 9.17

1.83***

1.47, 2.28

 No

ref

ref

ref

ref

 Yes

8.00***

7.19, 8.91

1.80***

1.43, 2.26

 Never

ref

ref

ref

ref

 Rarely

0.72***

0.63, 0.82

0.94

0.81, 1.09

 Ever

0.58***

0.47, 0.70

0.92

0.74, 1.14

 Far from home

ref

ref

ref

ref

 Risky environment

0.11***

0.05, 0.24

1.20

0.51, 2.81

 Official

1.14**

0.60, 2.18

2.57**

1.28, 5.15

 Unemployed

2.39***

1.25, 4.59

3.74**

1.86, 7.50

 Student

0.25***

0.12, 0.52

1.47

0.67, 3.22

 Illiterate

ref

ref

ref

ref

 Elementary

1.13***

0.83, 1.53

1.07

0.75, 1.52

 Junior

0.96*

0.71, 1.30

1.04

0.73, 1.47

 High school

0.40***

0.29, 0.53

0.85

0.59, 1.21

 Academic

0.12***

0.09, 0.16

0.48

0.34, 0.70

 Injection drug

ref

ref

ref

ref

 Unsafe sex (heterosexual)

0.06***

0.05, 0.07

0.21***

0.18, 0.25

 Unsafe sex (homosexual)

0.16***

0.11, 0.23

0.64*

0.44, 0.93

 Blood and blood products

1.11

0.66, 1.88

2.84**

1.57, 5.13

 Vertical transfer

0.22***

0.16, 0.29

1.04

0.68, 1.58

 High risk spouse

0.26***

0.20, 0.34

0.75

0.55, 1.02

 HIV ⁺ Spouse

0.70***

0.59, 0.84

1.66**

1.29, 2.13

 Job Exposure

0.004***

0.002, 0.01

0.023***

0.009, 0.06

 Unknown

0.19***

0.17, 0.23

0.45***

0.38, 0.54