Table 1

Characteristics of Safety Square intervention participants

Variable

Unexposed to intervention

n = 118 (%)

Exposed to Intervention

n = 90 (%)

Total

n = 208 (%)

Test statistic, p-value

Site

15.15, p < .001

Chicago

81 (68.6)

38 (42.2)

119 (57.2)

Hartford

25 (21.2)

39 (43.3)

64 (30.8)

Oakland

12 (10.2)

13 (14.4)

25 (12)

Age [mean (SD)]

41.8 (8.5)

41.0 (9.7)

41.4 (9.0)

NS

Female

48 (40.7)

36 (40.0)

84 (40.4)

NS

Race/ethnicity

Non-Hispanic White

10 (8.5)

5 (5.6)

15 (7.2)

17.29, p < .001*

African American

78 (66.1)

37 (41.1)

115 (55.3)

Hispanic

29 (24.6)

45 (50.0)

74 (35.6)

Other/not reported

1 (.8)

3 (3.3)

4 (1.9)

Less than high school education

52 (44.4)

52 (57.8)

104 (50.2)

NS

Earning <$1000 per month

77 (65.2)

60 (66.7)

137 (65.9)

NS

SEP user

24 (20)

32 (35.6)

56 (26.9)

6.0, p = .01

Drug treatment (Ever)

83 (71.6)

70 (79.5)

153 (75)

NS

Ever tested for HIV

82 (92.1)

108 (92.3)

190 (92.2)

NS

Diagnosed HIV+

16 (14.7)

11 (13.3)

27 (14.1)

NS

History of

Hepatitis B

15 (13)

11 (13.1)

26 (13.1)

NS

Hepatitis C

11 (9.5)

15 (17.4)

26 (12.9)

NS

Hepatitis of unknown etiology

9 (7.9)

14 (15.6)

23 (11.3)

NS

Hepatitis B vaccinated (ever)

31 (27.7)

22 (27.8)

53 (27.7)

NS

Heroin as the drug injected most often in past 30 days

80 (67.8)

66 (73.3)

146 (70.2)

NS

* Exposure associated with Hispanic ethnicity p = .06 (reference = Non-Hispanic white and all other groups)

Grau et al. Harm Reduction Journal 2009 6:36   doi:10.1186/1477-7517-6-36