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Table 1 Baseline patient and clinic characteristics for main analytic sample (n = 5715)

From: The effect of a clinical decision support system on prompting an intervention for risky alcohol use in a primary care smoking cessation program: a cluster randomized trial

Variables Intervention Control
Individual level (n = 2916) (n = 2799)
 Age in years (mean, SD) 47.8 (13.6) 48.1 (13.7)
 Male 1600 (55) 1548 (55)
 Graduated high school 2074 (71) 2014 (72)
 Household income above 40 k 867 (30) 908 (32)
 Currently employed 1523 (52) 1492 (53)
 Daily smoking status 2751 (94) 2611 (93)
 Heaviness of smoking index > 3 718 (26) 646 (25)
 Number of alcohol drinks in past week (mean, SD) 10.6 (13.2) 10.5 (12.6)
 Audit C score (med, IQR) 5 (4–7) 5 (4–7)
 Audit 10 score > = 20 141 (5) 100 (4)
 Past year attempts to quit smoking 1493 (51) 1432 (51)
 Lifetime attempts to quit smoking > = 11 478 (16) 442 (16)
 Marijuana use in past 30 days 968 (33) 852 (30)
 Opioid use in past 30 days 435 (15) 419 (15)
 Number of comorbid conditions endorsed (mean, SD) 2.5 (2.0) 2.3 (2.0)
Cluster level
 Participants per cluster (mean, SD) 31.4 (31.4) 30.4 (38.1)
 Year clinic enrolled first patient in the STOP program   
  2011 37 (40) 34 (37)
  2012 32 (34) 26 (28)
  2013 6 (6) 8 (9)
  2014 9 (10) 13 (14)
  2015 9 (10) 10 (11)
  2016 0 (0) 1 (1)
 Local Health Integration Networks* (health regions in Ontario)
  Central 5 (5) 4 (4)
  Central East 7 (8) 9 (10)
  Central West 3 (3) 2 (2)
  Champlain 10 (11) 10 (11)
  Erie-St. Clair 11 (12) 4 (4)
  Hamilton Niagara Haldimand Brant 9 (10) 6 (7)
  Mississauga Halton 1 (1) 2 (2)
  North East 9 (10) 12 (13)
  North Simcoe Muskoka 3 (3) 8 (9)
  North West 5 (5) 5 (5)
  South East 10 (11) 7 (8)
  South West 8 (9) 10 (11)
  Toronto Central 6 (6) 8 (9)
  Waterloo Wellington 6 (6) 5 (5)
  1. Note: Values are numbers (percentages) unless stated otherwise
  2. IQR interquartile range, SD standard deviation
  3. *Local Health Integration Networks (LHINs) are agencies established by the Government of Ontario to plan, coordinate, integrate, and fund health services at a local level. They represent health regions across the province. A total of 14 LHINs have been established across Ontario