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. Author manuscript; available in PMC: 2017 Oct 1.
Published in final edited form as: Drug Alcohol Depend. 2016 Aug 28;167:199–206. doi: 10.1016/j.drugalcdep.2016.08.622

Table 3.

Participant Substance Use Characteristics

Participant Substance Use Characteristics (N=38)
Marijuana (MJ) Use
Age of first use 15.9 (2)
Age of regular use* 17.7 (2.1)
Recency of last MJ use (in days) 1.9 (2.7)
Frequency of use
  Days used in past 90 days 53.6 (22.0)
  Days used in past 30 days 19.7 (7.5)
  Times used in past 90 days 103 [50, 164]
  Times used in past 30 days 42.5 (32.6)
Amount of use
  Grams consumed in past 90 days 28.3 [11.3, 78.7]
  Grams consumed in past 30 days 11.3 [2.6, 31.3]
Severity of use
  MJ Use Disorder (SCID-IV)
    % Lifetime Abuse 45.9%
    % Current Abuse 29.7%
    % Lifetime Dependence 29.7%
    % Current Dependence 18.9%
  Baseline CUDIT 14.7 (6.2)
    % ≥ 8 89.5%
    % ≥ 12 58.3%
Withdrawal
  Baseline
    Intensity 29.5 [15, 49.75]
    Negative Impact 33 [22, 48.5]
  Change from Baseline to Week 1
    Intensity −1 [−11, 5]
    Negative Impact 0 [−9, 3]
  Change from Baseline to Week 4
    Intensity −3 [−24.5, 6]
    Negative Impact 0 [−16.5, 4]
Alcohol Use
% Ever used 100%
Age of 1st use 15.5 (2)
Recency of last use
  % drank in last week 89.5%
  % drank in last month 94.7%
  % drank in last year 100%
Binge drinking episodes 20 [2.0, 62.5]
Frequency of use
  Days drank in past 90 days 25.1 (14.1)
  Days drank in past 30 days 8.4 (5.0)
Amount of use
  Standard drink equivalents in past 90 days 81.8 [54, 152.5]
  Standard drink equivalents in past 30 days 30.0 [12.0, 60.5]
Severity of use
  Alcohol Use Disorder (SCID-IV) 10.8%
    % Lifetime Abuse 0%
    % Current Abuse 10.8%
    % Lifetime Dependence 0%
    % Current Dependence 9.0 (6.3)
  Baseline AUDIT 36.8%
    % ≥ 8 18.4%
    % ≥ 13 (female) or ≥ 15 (male)
Nicotine Use
% Ever used 89.5%
Age of 1st use 17 (2.5)
Recency of use
  % smoked in last week 47.4%
  % smoked in last month 63.2%
  % smoked in last year 81.6%
Frequency of use
  Days smoked in past 90 days 2.5 [0, 15.75]
  Days smoked in past 30 days 1 [0, 4.5]
  Times smoked in past 90 days 2.5 [0, 27.5]
  Times smoked in past 30 days 1 [0, 7.0]
Amount of use
  Cigarette equivalents in past 90 days 2.5 [0, 70.5]
  Cigarette equivalents in past 30 days 1 [0, 18.0]
Other Drug Use
% use of any drug >10 times 31.6%
Recency of use
  % use of any drug in past 30 days 26.3%
  % use of any drug in past 90 days 68.4%
Severity of use
  Other Drug Use Disorder (SCID-IV)
    % Lifetime Abuse 5.4%
    % Current Abuse 0%
    % Lifetime Dependence 2.7%
    % Current Dependence 0%
*

Data available only for 26 participants.

Includes hookah and mulling

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