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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: J Abnorm Child Psychol. 2010 Feb;38(2):211–224. doi: 10.1007/s10802-009-9360-y

Table 3.

Odds Ratios (95% Confidence Intervals) Representing Risk for First Problem Related to the Use of Each Substance Associated with a 1-Point Increase in Predictor Variablesa

Generalized Anxiety
 Social Anxiety
Model 1 Model 2 Model 3 Model 4 Model 5 Model 1 Model 2 Model 3 Model 4 Model 5
Alcohol (n=412)
 Time 352.76*** (35.25–99) 278.41*** (27.00–99) 304.92*** (29.21–99) 279.05*** (27.05–99) 379.48*** (37.14–99) 366.08*** (35.99–99) 264.57*** (25.76–99) 548.43*** (37.43–99) 271.52*** (26.37–99) 394.10***
(37.94–99)
 Time2 0.84*** (0.78–0.90) 0.84*** (0.79–0.91) 0.85*** (0.79–0.91) 0.85*** (0.79–0.91) 0.84*** (0.78–0.90) 0.84*** (0.78–0.90) 0.85*** (0.79–0.91) 0.83*** (0.76–0.90) 0.85*** (0.79–0.91) 0.84***
(0.78–0.90)
 Age at 1st use 0.97 (0.92–1.03) 0.98 (0.93–1.04) 0.97 (0.92–1.03) 0.98 (0.93–1.04) 0.91 (0.78–1.08) 0.97 (0.92–1.03) 0.98 (0.93–1.04) 0.97 (0.92–1.03) 0.98 (0.92–1.04) 0.91
(0.78–1.08)
 Anx 1.03 (0.92–1.15) 0.98 (0.87–1.10) 0.94 (0.66–1.34) 0.98 (0.86–1.11) 1.03 (0.92–1.15) 1.03 (0.91–1.17) 0.96 (0.84–1.09) 1.16 (0.80–1.70) 0.94 (0.82–1.08) 1.03
(0.91–1.17)
 Delinq 1.33*** (1.16–1.53) 1.33** (1.16–1.53) 1.34*** (1.17–1.54) 1.36 (1.18–1.58)
 Anx*time χ2=0.28 χ2=0.52
 Anx*delinq χ2=0.01 χ2=0.71
 Age at 1st use*time χ2=0.59 χ2=0.61
 AIC 772.46 752.05 774.18 754.04 773.87 772.43 751.79 774.00 753.08 773.82
 SC 805.20 791.31 813.47 799.85 813.16 805.17 791.05 813.29 798.89 813.11
Tobacco (n=301)
 Time 0.06 (0.00–1.19) 0.05 (0.00–1.05) 0.05 (0.00–1.01) 0.05 (0.00–1.02) 0.06 (0.00–1.28) 0.07 (0.00–1.57) 0.07 (0.00–1.45) 0.12 (0.00–3.12) 0.07 (0.00–1.52) 0.08
(0.00–1.71)
 Time2 1.34* (1.07–1.69) 1.35* (1.07–1.70) 1.36** (1.08–1.72) 1.36** (1.08–1.71) 1.34* (1.06–1.68) 1.32* (1.05–1.68) 1.33* (1.05–1.68) 1.27 (0.99–1.64) 1.33* (1.05–1.68) 1.32*
(1.04–1.67)
 Time3 0.99** (0.99–1.00) 0.99** (0.99–1.00) 0.99** (0.99–1.00) 0.99** (0.99–1.00) 0.99** (0.99–1.00) 0.99** (0.99–1.00) 0.99** (0.99–1.00) 0.99* (0.99–1.00) 0.99** (0.99–1.00) 0.99**
(0.99–1.00)
 Age at 1st use 0.98 (0.93–1.02) 0.98 (0.93–1.03) 0.98 (0.93–1.02) 0.98 (0.93–1.03) 0.92 (0.84–1.01) 0.98 (0.93–1.02) 0.98 (0.93–1.03) 0.97 (0.93–1.02) 0.98 (0.93–1.03) 0.92
(0.84–1.01)
 Anx 1.04 (0.94–1.15) 1.03 (0.93–1.15) 1.09 (0.90–1.31) 1.02 (0.91–1.14) 1.04 (0.93–1.15) 0.97 (0.87–1.08) 0.95 (0.85–1.06) 0.88 (0.72–1.07) 0.95 (0.85–1.07) 0.96
(0.86–1.08)
 Delinq 1.08 (0.95–1.23) 1.07 (0.94–1.22) 1.11 (0.98–1.26) 1.10 (0.97–1.25)
 Anx*time χ2=0.32 χ2=1.26
 Anx*delinq χ2=0.76 χ2=0.59
 Age at 1stuse*time χ2=2.02 χ2=2.08
 AIC 923.32 909.77 924.99 911.01 923.29 923.38 909.19 924.11 910.60 923.29
 SC 960.33 952.92 968.18 960.33 966.48 960.39 952.35 967.30 959.92 966.48
Marijuana (n=294)
 Time 34.65*** (6.77–177.40) 30.61*** (5.94–157.68) 38.94*** (6.81–222.72) 30.64*** (5.95–157.84) 35.18*** (6.82–181.43) 32.66*** (6.28–169.76) 29.61*** (5.67–154.59) 25.15*** (4.46–141.87) 30.26*** (5.76–159.04) 33.44***
(6.38–175.42)
 Time2 0.90*** (0.85–0.95) 0.90*** (0.86–0.95) 0.90*** (0.85–0.95) 0.90*** (0.86–0.95) 0.90*** (0.85–0.95) 0.90*** (0.86–0.95) 0.91*** (0.86–0.96) 0.91*** (0.86–0.96) 0.90*** (0.86–0.95) 0.90***
(0.85–0.95)
 Age at 1stuse 0.91* (0.83–1.00) 0.92* (0.84–1.01) 0.91* (0.83–1.00) 0.92# (0.83–1.01) 0.89 (0.73–1.09) 0.91# (0.83–1.00) 0.93# (0.84–1.01) 0.91# (0.84–1.00) 0.92# (0.84–1.01) 0.88
(0.72–1.08)
 Anx 1.14* (1.01–1.28) 1.11 (0.98–1.26) 1.20 (0.92–1.57) 1.12# (0.99–1.28) 1.14# (1.00–1.28) 1.20# (1.04–1.37) 1.17* (1.01–1.35) 1.09 (0.80–1.47) 1.15 (0.99–1.33) 1.20*
(1.04–1.38)
 Delinq 1.12 (0.96–1.30) 1.13 (0.97–1.31) 1.10 (0.94–1.29) 1.09 (0.93–1.29)
 Anx*time χ2=0.19 χ2=0.51
 Anx*delinq χ2=0.74 χ2=0.84
 Age at 1stuse*time χ2=0.06 χ2=0.14
 AIC 613.25 612.77 615.06 614.02 615.18 610.83 610.76 612.33 611.92 612.69
 SC 644.26 649.96 652.28 657.42 652.41 641.85 647.96 649.55 655.32 649.92
a

Model 1: baseline (time, age at first use, anxiety); Model 2: time, age at first use, anxiety, delinquency; Model 3: time, age at first use, anxiety, interaction of time and anxiety; Model 4: time, age at first use, anxiety, delinquency, interaction of anxiety and delinquency; Model 5: time, age at first use, anxiety, and interaction of age at first use and time. When interaction effects are included in a model, we present main effect odds ratios of the variables included in the interaction; those odds ratios represent the effect of one variable at the mean of the other variable

*

p<0.05;

**

p<0.01;

***

p<0.001;

#

p<0.10;

AIC Akaike's information criterion; SC Schwarz criterion; anx anxiety; delinq delinquency