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Table 1 Injecting and treatment history: PWID London 2017–2019

From: Injecting-related health harms and overuse of acidifiers among people who inject heroin and crack cocaine in London: a mixed-methods study

Demographics and injecting historyN = 455
DemographicsN (%)
Age (years), mean (SD)45.7 (9.0)
Gender
 Male341 (75.0)
 Female114 (25.0)
Ethnicity
 White or White British336 (73.9)
 African, Caribbean or Black British50 (11.0)
 Asian or Asian British12 (2.6)
 Mixed ethnicity27 (5.9)
 Other30 (6.6)
Place of residence, past 12 months
 Own house/flat169 (37.1)
 Shared house/flat25 (5.5)
 At parents, relatives or friends house28 (6.2)
 Hostel146 (32.1)
 Street homeless61 (13.4)
 Gaol/prison15 (3.3)
 Other11 (2.4)
Ever homeless
 No100 (22.0)
 Yes355 (78.0)
Injecting history
 Age of injecting initiation, mean (SD)24.8 (8.7)
 Duration injecting main drug
  One year or less57 (12.5)
  2–4 years70 (15.4)
  5–7 years50 (11.0)
  8–10 years55 (12.1)
  11–14 years31 (6.8)
  15+ years192 (42.2)
Injected in the last 12 months
  Yes284 (62.4)
  No171 (37.6)
Main drug injected in last 12 monthsN = 284
  Heroin and crack combined164 (57.8)
  Heroin only97 (34.2)
Stimulants (amphetamine, methamphetamines, speed)11 (3.9)
  Crack only5 (1.8)
  Methadone4 (1.4)
  Cocaine2 (0.7)
  Methedrone1 (0.4)
Main drug injected in the past, if had not injected in last 12 monthsn = 171
  Heroin only102 (59.7)
  Heroin and crack combined61 (35.7)
  Stimulants (amphetamine, methamphetamines, speed)4 (2.3)
  Crack (only)2 (1.2)
  Methadone1 (0.6)
  Steroids or other performance enhancing drugs1 (0.6)
Treatment history
 Ever been on opiate substitution therapy (OST)
  Yes, currently360 (79.1)
  Yes, not now but in the past62 (13.6)
  No33 (7.3)
Duration on opiate substitution therapy, if receiving OST currentlyn = 360
  Duration on OST (years), median (95% CI)10 (7.10)