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Table 4 Characteristics of patient study population attending intervention and control practices at baseline

From: Feasibility of alcohol screening among patients receiving opioid treatment in primary care

Characteristic/Category Intervention (n = 34) Control (n = 47)
n (%) Mean (SD) n (%) Mean (SD)
Male 20 (58.8 %)   30 (63.8 %)  
Age   41.5 (7.9)   42.4 (8.8)
Ever injected drugs 23 (67.6 %)   38 (80.9 %)  
Age of first injection   21.3 (3.4)   21.8(6.3)
Hepatitis C positive 20 (58.8 %)   29 (61.7 %)  
Receiving methadone 33 (97.1 %)   47 (100 %)  
Age first methadone use   25.6 (8.3)   25.8 (7.9)
Mean methadone dose   82.2 (22.7)   65.2 (28.6)
Attends Level 1 GP 15 (44.1 %)   26 (55.3 %)  
Attends Level 2 GP 19 (55.9 %)   21 (44.7 %)  
Geographical area of GP:
 East 30 (88.2 %)   43 (91.5 %)  
 West 4 (11.8 %)   4 (8.5 %)  
Employed 6 (17.6 %)   2 (4.3 %)  
Current accommodation:
 Rented 9 (26.5 %)   16 (34 %)  
 Owned 4 (11.8 %)   4 (8.5 %)  
 Family of origin 3 (8.8 %)   8 (17 %)  
 Social housing 15 (44.1 %)   17 (36.2 %)  
 Supported housing 2 (5.9 %)   2 (4.3 %)  
 No Fixed abode 1 (2.9 %)   0 (0 %)  
Past 30-day drug use (self-reported)a
Number of patients who used illicit drugs in the last 30 daysb 14 (41.2 %)   17 (36.2 %)  
Alcohol screening*
Q: Have you ever been asked about your alcohol use by healthcare professionals?
19 (55.9 %)   31 (66 %)  
Alcohol brief intervention**
Q: Did they advise you on safe drinking or talk to you about alcohol?
14 (41.2 %)   23 (48.9 %)  
Specialist referral***
Q: Have you ever been referred to a specialist/ addiction counsellor for alcohol use?
7 (20.6 %)   7 (14.9 %)  
  1. aData obtained from baseline patient questionnaires with data referring to the previous 30 days
  2. bHeroin, illicit methadone, illicit benzodiazepines, cocaine, amphetamines, cannabis, other drugs
  3. * ICC (SE) = 0.016 (0.014)
  4. ** ICC (SE) = –0.06 (0.017)
  5. *** ICC (SE) = 0.22 (0.026)