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Table 2 Demographic description of study sample

From: Lessons learned from a peri-urban needle exchange

  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