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. 2020 Mar 1;10(3):62. doi: 10.3390/bs10030062

Table 1.

Demographic and clinical characteristics of the sample. Sample size (N), mean, and standard deviation (SD) are provided.

Variable AUD CTL
N* Mean SD N* Mean SD
Age (in years) 30 41.42 7.31 30 27.44 4.74
Education (in Years) 30 11.93 2.35 30 15.77 1.87
Age of onset (regular alcohol use) 30 15.77 2.58 12 20.50 3.80
Alcohol: Drinks/day (heaviest period of alcohol use) 30 12.08 10.02 12 2.88 1.93
Alcohol: Days/month (heaviest period of alcohol use) 30 20.30 9.01 12 3.35 3.64
Alcohol: Drinks (last 6 months) 30 2.68 6.61 18 2.61 1.98
Alcohol: Days (last 6 months) 30 3.97 8.02 18 2.94 3.62
Length of abstinence from drinking (in months) 30 22.43 28.16 18 1.9 4.99
Tobacco: Times/day (last 6 months) 20 9.90 5.80 6 2.33 1.63
Tobacco: Days/month (last 6 months) 20 28.35 4.83 6 14.17 13.82
Marijuana: Times in last 6 months 10 98.80 91.38 4 18.75 27.61

*N refers to the number of subjects included in these mean and standard deviation calculations for each variable. Individuals who did not consume alcohol or drugs were not included in the respective calculations.