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. Author manuscript; available in PMC: 2010 Apr 1.
Published in final edited form as: Addict Behav. 2008 Nov 27;34(4):343–351. doi: 10.1016/j.addbeh.2008.11.019

Table 6.

Logistic Regression Analysis (Y = Methamphetamine), Model #2

Eighth Grade Eleventh Grade
Model Fit
Model Fit
Cases 1,462 Cases 1,051
AIC 209.890 AIC 338.392
Chi-square 214.123 Chi-square 81.565
Significance 0.000 Significance 0.000
Pseudo R2 0.136 Pseudo R2 0.075

Independent variables Odds Ratio: Exp(B) Statistical Significance C.I.
Independent variables Odds Ratio: Exp(B) Statistical Significance C.I.
Lower Upper Lower Upper

Interaction with antisocial peers 1.91 0.004 1.23 2.96 Interaction with antisocial peers 1.65 0.048 1.00 2.70
Peers use of drugs 2.47 0.000 1.74 3.51 Peers use of drugs 2.15 0.000 1.48 3.13
Parents favor antisocial behavior 1.39 0.237 0.80 2.41 Parents favor antisocial behavior 0.79 0.548 0.37 1.69
Parents favor drug use 1.92 0.005 1.22 3.02 Parents favor drug use 1.40 0.155 0.88 2.24
High family conflict 1.12 0.608 0.73 1.71 High family conflict 0.84 0.429 0.55 1.29
Rule setting 1.06 0.778 0.70 1.60 Rule setting 1.51 0.070 0.97 2.35
Rule enforcement 1.18 0.606 0.63 2.20 Rule enforcement 0.60 0.133 0.31 1.17
Parental monitoring 1.20 0.499 0.71 2.05 Parental monitoring 1.75 0.054 0.99 3.10
Gender (0=female, 1 = male) 1.38 0.365 0.69 2.78 Gender (0=female, 1 = male) 2.08 0.029 1.08 4.03
♀* interact w/antisocial peers 2.77 0.005 1.36 5.65 ♀* interact w/antisocial peers 1.74 0.106 0.89 3.39
♂* interact w/antisocial peers 1.63 0.126 0.87 3.03 ♂* interact with antisocial peers 1.53 0.261 0.73 3.20
♀*peers use of drugs 2.43 0.000 1.52 3.90 ♀* peers use of drugs 1.71 0.026 1.07 2.75
♂* peers use of drugs 2.45 0.001 1.42 4.24 ♂* peers use of drugs 3.17 0.000 1.71 5.86
♀*parents favor antisocial beh. 2.18 0.056 0.98 4.84 ♀* parents favor antisocial beh. 1.52 0.401 0.57 4.06
♂*parents favor antisocial beh. 0.96 0.928 0.44 2.11 ♂*parents favor antisocial beh. 0.35 0.090 0.10 1.18
♀* parents favor drug use 1.63 0.120 0.88 3.01 ♀* parents favor drug use 1.23 0.514 0.66 2.30
♂ parents favor drug use 3.29 0.002 1.57 6.89 ♂ parents favor drug use 1.61 0.218 0.76 3.42
Female * parents favor drug use 0.84 0.574 0.45 1.55 Female * parents favor drug use 0.92 0.764 0.53 1.60
Male * parents favor drug use 1.38 0.310 0.74 2.55 Male * parents favor drug use 0.83 0.593 0.41 1.66
Female * rule setting 0.97 0.909 0.53 1.75 Female * rule setting 1.75 0.071 0.95 3.21
Male * rule setting 1.40 0.296 0.75 2.61 Male * rule setting 1.32 0.423 0.67 2.60
Female * rule enforcement 2.17 0.051 1.00 4.72 Female * rule enforcement 0.62 0.261 0.27 1.42
Male * rule enforcement 0.48 0.131 0.19 1.25 Male * rule enforcement 0.40 0.133 0.12 1.32
Female * parental monitoring 0.71 0.425 0.31 1.64 Female * parental monitoring 1.36 0.415 0.65 2.83
Male * parental monitoring 1.86 0.096 0.89 3.87 Male * parental monitoring 2.66 0.043 1.03 6.86