The Edinburgh Addiction Cohort: recruitment and follow-up of a primary care based sample of injection drug users and non drug-injecting controls

Table 1 Cohort characteristics at recruitment

Characteristic	N
Male (%)	794	543 (68.4)
Born in Edinburgh (%)	794	530 (66.7)
Mean age (SD, min-max) at first injection	606*	19.9 (5.1, 11-41)
Mean age (SD, min-max) at recruitment	606	26.7 (6.3, 16-52)
Mean years (SD, min-max) first injection to recruitment	606	6.9 (5.7, 0-28)
Recruited within 5 years of injection onset (%)	606	306 (50.5)

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