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Table 4 Level of poly-substance use, socio-demographic characteristics, risk behaviours, among poly- substance users residing in three communities in Cape Town, South Africa, 2015

From: Using respondent-driven sampling (RDS) to recruit illegal poly-substance users in Cape Town, South Africa: implications and future directions

 

Site 1

Site 2

Site 3

 

Variable

Sample N (%)

Adjusteda %

95 % CI

Sample N (%)

Adjusteda %

95 % CI

Sample N (%)

Adjusteda %

95 % CI

x2

(p-value)

Poly substance use

  2 –3 substances

45 (35.7)

43.7

23.3 –58.5

53 (51.5)

56.5

44.1 –67.0

24 (22.2)

27.7

15.7 –39.3

 

   > 3 substances

81 (64.3)

56.3

41.5 –76.7

50 (48.5)

43.5

32.7 –55.9

84 (77.8)

72.3

60.7 –84.3

 

Ses variables

 Age

          

  18 –24

24 (19.0)

35

16.3 –47.6

14 (13.6)

13.5

6.20 –20.7

51 (47.2)

54

38.6 –68.9

53.079

  25 –30

43 (34.1)

33.6

23.1 –53.3

31 (30.1)

33.7

23.5 –46.2

35 (32.4)

30.5

19.7 –44.1

0.00

  31 –35

29 (23.0)

14.4

6.4 –24.0

17 (16.5)

15.4

6.8 –24.1

13 (12.0)

5.9

0.2 –10.3

 

   > 35

30 (23.8)

17

7.1 –27.3

41 (39.8)

37.4

26.0 –49.9

9 (8.3)

9.6

2.4 –17.6

 
 

(mean 31.1; SD 8.3)

(mean age 34.1: SD 8.7)

  

 Gender

  Male

62 (49.2)

34.8

22.0 –51.8

58 (56.3)

52.7

38.9 –65.1

96 (88.9)

89.6

80.6 –97.6

43.798

  Female

64 (50.8)

65.2

48.2 –78.0

45 (43.7)

47.3

34.9 –61.1

12 (11.1)

10.4

2.4 –19.4

0.00

 Employment

  Unemployed

95 (75.4)

75.3

61.7 –91.0

47 (45.6)

45.2

34.2 –57.1

87 (80.6)

79.4

68.6 –89.2

34.649

  Employed

31 (24.6)

24.7

9.0 –38.3

56 (54.4)

54.8

42.9 –65.8

21 (19.4)

20.6

10.8 –31.4

0.00

 Education

          

  Primary/none

24 (19.0)

16.4

7.9 –27.5

34 (33.0)

34.1

23.9 –46.0

14 (13.0)

17.3

8.1 –28.5

13.254

  High/tertiary

102 (81.0)

83.6

72.5 –92.1

69 (67.0)

65.9

54.0 –76.1

94 (87.0)

82.7

71.5 –91.9

–0.001

Ses

  Not enough for food

50 (40.3)

42.6

25.2 –56.6

46 (47.4)

43.5

28.6 –58.7

50 47.2)

43.1

31.8 –56.2

13.378

  Basics only

57 (46.6)

50.5

35.9 –68.1

28 (28.9)

33.8

19.6 –49.2

34 (32.1)

37.5

25.7 –50.3

–0.037

  Food, clothes + extras

17 (13.7)

6.9

3.2 –12.4

23 (23.7)

22.7

12.3 –35.4

22 (20.8)

19.4

0.1 –27.8

 

Risk behaviours

Had sex for drugs

19 (15.1)

11.6

4.8 –20.5

21 (20.4)

19.4

10.3 –29.6

7 (6.5)

10.5

3.4 –18.9

8.71

–0.013

Stole to buy drugs

51 (40.5)

34

22.6 –51.8

23 (22.3)

19.7

10.8 –31.8

35 (32.4)

23.3

15.5 –32.9

8.528

–0.014

Arrested

34 (27.0)

19.4

10.1 –31.3

46 (44.7)

44

32.8 –52.5

43 (39.8)

34.9

25.7 –48.4

8.394

–0.015

Cage

Low risk

33 (26.2)

30

13.7 –39.4

25 (24.3)

27.5

16.4 –38.2

19 (17.6)

15.2

8.6 –23.5

2.609

Problematic use

93 (73.8)

70

60.6 –86.3

78 (75.7)

72.5

61.8 –83.6

89 (82.4)

84.8

76.5 –91.4

–0.271

Treatment

Ever Treatment (No/Yes)

102 (81.0)

75.9

57.9 –89.5

68 (66.0)

63.8

51.8 –76.1

97 (89.8)

88.5

78.0 –95.2

20.992

 

24 (19.0)

24.1

10.5 –42.1

35 (34.0)

36.2

23.9 –48.2

11 (10.2)

11.5

4.8 –22.0

0

Future Treatment (No/Yes)

60 (39.7)

38.6

23.6 –54.6

29 (28.2)

32.1

22.2 –43.7

27 (25.0)

26.2

17.2 –37.4

6.563

 

76 (60.3)

61.4

45.4 –76.4

74 (71.8)

67.9

56.3 –77.8

81 (75.0)

73.8

62.6 –82.8

–0.038

  1. aWeighted estimates