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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Soc Sci Res. 2012 Apr 3;41(5):1227–1240. doi: 10.1016/j.ssresearch.2012.03.015

Table 1.

Descriptive statistics for the complete covariate list (N ≈ 718).

Variables N % N Mean Sd Min Max Male Female
Fundamental causes/background
Age at Wave 1 715 100 11.09 [0.82] 10 13 11.13 11.05
Age at Wave 6 643 90 16.21 [0.88] 14 18 16.25 16.18
Female respondent 718 100 0.50 [0.50] 0 1 0.00 1.00
Income below $25,000 702 98 0.44 [0.50] 0 1 0.44 0.45
Education:<high school 715 100 0.17 [0.38] 0 1 0.16 0.19
Education: high school 715 100 0.36 [0.48] 0 1 0.38 0.35
Education: some college/degree 715 100 0.46 [0.50] 0 1 0.46 0.47
Employment: full time 716 100 0.58 [0.49] 0 1 0.57 0.58
Employment: part-time 716 100 0.10 [0.30] 0 1 0.10 0.10
Employment: unemployed 716 100 0.18 [0.39] 0 1 0.17 0.20
Employment: other 716 100 0.14 [0.35] 0 1 0.16 0.12
Stressors
Financial strain (z) 659 92 0.00 [1.00] −1 4 0.02 −0.02
Negative events (z) 709 99 0.00 [1.00] −2 4 −0.03 0.02
Perceived discrimination (z) 706 98 −0.01 [1.00] −1 4 0.03 −0.05
Parent discrimination (z) 626 87 0.00 [0.99] −2 3 −0.06 0.06
Parent alcohol abuse (ever) 711 99 0.64 [0.48] 0 1 0.65 0.62
Parent major depression (ever) 711 99 0.19 [0.39] 0 1 0.17 0.21
Support
Family structure: married 714 99 0.32 [0.47] 0 1 0.34 0.31
Family structure: partnered 714 99 0.26 [0.44] 0 1 0.25 0.28
Family structure: never married 714 99 0.22 [0.41] 0 1 0.18 0.26
Family structure: sep/div/widowed 714 99 0.19 [0.40] 0 1 0.23 0.15
Child-parent warmth/approval (z) 715 100 0.00 [1.00] −4 2 −0.04 0.05
Parent–parent warmth/support (z) 716 100 0.00 [1.00] −4 2 −0.12 0.12
Positive school experiences (z) 710 99 −0.01 [1.00] −2 2 0.07 −0.09
Psychosocial
Positive school attitudes (z) 713 99 −0.01 [1.00] −3 1 −0.06 0.04
Feelings of anger (z) 716 100 −0.01 [0.99] −2 3 −0.01 0.00
Depressive symptoms (z) 699 97 −0.01 [0.99] −2 3 −0.08 0.06
Friend delinquency (z) 663 92 −0.01 [1.00] −1 3 −0.01 0.00
Outcomes
Marijuana use at age 11 470 65 0.07 [0.42] 0 5 0.04 0.09
Marijuana use at age 14 611 85 1.26 [1.93] 0 6 1.25 1.28
Marijuana abuse/dependence 652 91 0.27 [0.45] 0 1 0.28 0.27