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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Addiction. 2019 Oct 28;115(2):337–346. doi: 10.1111/add.14815

Table 1.

Descriptive Statistics

Full sample (n = 5582; 54% Female)
Measure N Mean SD Min Max
Age 5582 42.29 13.26 25 91
AUDSX 5582 3.77 3.83 0 11
NDSX 4754 2.61 3.00 0 10
CUDSX 5578 1.56 2.81 0 11
Educational Attainment (years) 5578 13.43 2.33 2 17
Sibling subsample (n = 3098; 52% Female)
Measure N Mean SD Min Max
Age 3098 37.89 10.85 25 81
AUDSX 3098 4.39 3.90 0 11
NDSX 2752 2.58 3.00 0 10
CUDSX 3097 1.94 3.04 0 11
Educational Attainment (years) 3095 13.55 2.29 5 17