Table 2 Prevalence of lifetime and past-month non-injection drug use and drug injection among street-based female sex workers in Iran, 2017

Overall

60.36

57.07, 63.57

47.22

43.91, 50.54

6.93, 10.72

3.78

2.64, 5.25

Age at interview

 18–24

50.43

41.03, 59.79

42.73

33.63, 52.21

1.19, 1.08

2.56

0.53, 7.31

 25–34

60.16

55.00, 65.15

45.99

40.85, 51.18

5.47, 11.25

4.54

2.66, 7.17

 ≥ 35

67.31

62.22, 72.10

53.30

48.02, 58.51

8.44, 15.27

3.85

2.11, 6.36

Education

 Never attended school

59.68

46.44, 71.94

43.55

30.99, 56.74

2.67, 17.82

3.22

0.39, 11.17

 Primary school

66.06

59.41, 72.27

51.58

44.78, 58.33

8.58, 17.78

5.88

3.16, 9.84

 Secondary school

65.97

59.61, 71.93

44.60

49.08, 61.97

6.82, 14.93

3.32

1.44, 6.43

 High school

54.19

46.01, 62.21

39.35

31.61, 47.51

1.43, 8.23

2.58

0.70, 6.57

 Diploma or college

56.22

49.06, 63.18

42.79

35.84, 49.93

38.59, 11.41

3.48

1.41, 7.04

Marital status

 Single (never married)

40.34

33.98, 46.94

29.61

23.83, 35.92

3.32, 9.87

3.43

1.49, 6.65

 Currently married

65.77

57.56, 73.34

44.29

36.16, 52.65

2.34, 10.30

1.34

0.16, 4.76

 Divorced

67.51

62.36, 72.36

58.47

53.14, 63.65

6.02, 12.19

3.39

1.76, 5.84

 Temporarily married

78.57

68.26, 86.77

57.14

45.87, 67.89

6.72, 22.22

7.43

2.66, 14.90

 Widowed

57.69

45.97, 68.80

43.59

32.38, 55.29

10.17, 28.27

7.69

2.87, 15.99

Income

 $230 USD or less

74.04

64.51, 82.14

58.65

48.5, 68.22

5.39, 18.13

3.85

1.05, 9.55

 $230 to $1100 USD

63.34

59.09, 71.21

47.41

41.09, 53.78

9.22, 17.96

6.37

3.68, 10.14

 $1100 to $2200 USD

52

45.61, 58.33

42

35.80, 48.38

5.27, 12.55

4.4

2.21, 7.73

 $2200 USD or more

66.86

59.22, 73.90

57.40

49.57, 64.95

1.68, 8.34

0.00

0.00, 2.15

Housing status

 Living with family, friends, partner or spouse

57.72

53.22, 62.13

42.89

38.46, 47.39

4.83, 9.52

3.05

1.71, 4.97

 Living in their own house

50

40.22, 59.77

35.18

26.24, 44.96

4.52, 16.36

5.55

2.06, 11.70

 Homeless

76.19

69.84, 81.78

64.76

57.88, 71.21

9.85, 19.76

5.24

2.64, 9.17

Duration of sex work

 ≤ 5

53.05

45.11, 60.87

42.07

34.41, 50.01

2.53–10.16

3.05

0.9, 6.97

 > 5

66.85

62.68, 70.83

52.62

48.28, 56.92

9.18–14.84

5.06

3.35, 7.27

Age at first sex (years)

  ≤ 18

68.69

64.72, 72.46

55.30

51.13, 59.41

8.21, 13.41

4

2.55, 5.94

 > 18

49.59

43.15, 56.04

37.70

31.60, 44.11

3.79, 10.43

4.10

1.98, 7.40

Age at sex work debut (years)

 ≤ 18

63.39

56.71, 69.70

45.09

38.45, 51.85

7.35, 16.03

4.91

2.47, 8.61

 > 18

62.15

57.74, 66.41

50.80

46.33, 55.25

7.13, 12.47

4.18

2.60, 6.32

Number of clients per month

 < 5

55.40

48.45, 62.19

30.52

24.40, 37.17

3.63, 10.78

2.82

1.04, 6.03

 6–15

56.22

48.74, 63.48

42.16

34.95, 49.62

8.04, 18.06

7.03

3.79, 11.17

 16–30

71.75

63.22, 79.27

61.83

52.93, 70.17

7.74, 19.96

6.11

2.67, 11.67

 > 30

82.5

74.50, 88.82

79.17

70.80, 86.04

3.48, 13.76

0.8

0.02, 4.5

Group sex (ever)

 No

60.24

56.13, 64.24

45.44

41.33, 49–58

5.25, 9.64

3.10

1.84, 4.85

 Yes

60.75

58.81, 70.35

53.96

47.90, 59.92

8.62, 16.66

5.39

3.05, 8.74

Ever consumed alcohol

 No

41

36.13, 45.99

32.25

27.69, 37.07

2.11, 6.10

2.25

1.03, 4.22

 Yes

75.90

71.89, 79.59

59.24

54.77, 63.58

9.85, 15.89

5.02

3.27, 7.32

Ever incarcerated

 No

49.69

45.74, 53.63

40.16

36.33, 44.07

3.18, 6.62

3.28

2.04, 4.97

 Yes

86.82

82.07, 90.69

64.73

58.56, 70.55

14.04, 23.89

5.04

2.70, 8.46