Table 2

Demographic description of study sample

Baseline Only

Follow-Up Only

Both


Total sample size

74

17

14



% male

78.3

52.9

78.6



Age in 2006

(years)

(years)

(years)


Mean (SD)

48 (12)

47 (9)

54 (8)


1st Quartile

56

52

56


Median

51

48

52


3rd Quartile

43

44

49



Race/Ethnicity

N (%)

N (%)

N (%)


Black/African American

40 (54.0)

2 (11.8)

8 (57.1)


White/Caucasian

32 (43.0)

0 (0)

5 (35.7)


Native American/Alaskan Native

2 (2.7)

0 (0)

0 (0)


Not recorded

0 (0)

15 (88.2)

1 (7.1)



% zip 48197/8

71.6

87.5

100


Knittel et al. Harm Reduction Journal 2010 7:8   doi:10.1186/1477-7517-7-8

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