. 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 2.

Odds Ratios (95% Confidence Intervals) and Chi-Square Values Representing Risk for First Use of Substances Associated with a 1-Point Increase in Predictor Variables^a

	Generalized Anxiety				Social Anxiety
	Model 1	Model 2	Model 3	Model 4	Model 1	Model 2	Model 3	Model 4
Alcohol
Time	0.12^*** (0.05–0.29)	0.10^*** (0.04–0.26)	0.12^*** (0.05–0.29)	0.10^*** (0.04–0.26)	0.12^*** (0.05–0.30)	0.10^*** (0.04–0.26)	0.11^*** (0.05–0.29)	0.10^*** (0.04–0.25)
Time²	1.21^*** (1.12–1.31)	1.22^*** (1.13–1.33)	1.22^*** (1.12–1.31)	1.22^*** (1.13–1.33)	1.21^*** (1.12–1.31)	1.22^*** (1.13–1.33)	1.22^*** (1.12–1.32)	1.23^*** (1.13–1.33)
Time³	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)	1.00^*** (0.99–1.00)
Anxiety	1.18^*** (1.12–1.26)	1.09^* (1.02–1.16)	1.20^*** (1.13–1.28)	1.07 (1.00–1.14)	1.13^*** (1.06–1.20)	1.04 (0.98–1.11)	1.14^* (1.07–1.22)	1.02 (0.95–1.09)
Delinquency		1.69^*** (1.56–1.84)		1.68^*** (1.54–1.83)		1.71^*** (1.58–1.86)		1.70^*** (1.56–1.85)
Anxiety^*time			χ²=1.68				χ²=0.63
Anxiety^*delinquency				χ²=1.31				χ²=3.21
AIC	2459.65	2297.23	2459.97	2297.91	2474.60	2301.93	2475.98	2300.70
SC	2491.05	2334.84	2497.65	2341.79	2506.01	2339.55	2513.66	2344.58
Tobacco
Time	0.06^*** (0.02–0.16)	0.06^*** (0.02–0.17)	0.06^*** (0.02–0.17)	0.06^*** (0.02–0.17)	0.06^*** (0.02–0.16)	0.06^*** (0.02–0.17)	0.06^*** (0.02–0.18)	0.06^*** (0.02–0.17)
Time²	1.30^*** (1.18–1.42)	1.29^*** (1.17–1.41)	1.30^*** (1.18–1.42)	1.29^*** (1.17–1.41)	1.29^*** (1.18–1.41)	1.29^*** (1.17–1.41)	1.28^*** (1.17–1.41)	1.29^*** (1.17–1.41)
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)
Anxiety	1.17^*** (1.09–1.25)	1.09^* (1.02–1.17)	1.16 (1.08–1.25)	1.07 (0.99–1.16)	1.16^*** (1.09–1.25)	1.06 (0.99–1.14)	1.14 (1.06–1.24)	1.06 (0.98–1.15)
Delinquency		1.54^*** (1.42–1.68)		1.53^*** (1.40–1.67)		1.55^*** (1.42–1.68)		1.54^*** (1.41–1.68)
Anxiety^*time			χ²=0.09				χ²=0.94
Anxiety^*delinquency				χ²=0.83				χ²=1.55
AIC	2105.77	2007.90	2107.69	2009.08	2108.64	2009.46	2109.71	2009.90
SC	2138.18	2046.72	2146.57	2054.37	2141.04	2048.28	2148.59	2055.19
Marijuana
Time	0.32 (0.03–3.07)	0.17 (0.02–1.44)	0.33 (0.03–3.25)	0.17 (0.02–1.52)	0.34 (0.04–3.24)	0.19 (0.02–1.67)	0.34 (0.03–3.43)	0.18 (0.02–1.62)
Time²	1.19^* (1.01–1.41)	1.25^** (1.06–1.47)	1.19^* (1.00–1.42)	1.24^* (1.05–1.46)	1.19^* (1.00–1.41)	1.24^* (1.05–1.46)	1.19 (1.00–1.42)	1.24^* (1.05–1.47)
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)
Anxiety	1.09^** (1.02–1.17)	0.98 (0.91–1.06)	1.09 (0.97–1.22)	1.00 (0.92–1.09)	1.06 (0.99–1.14)	0.94 (0.87–1.01)	1.06 (0.94–1.20)	0.92 (0.85–1.00)
Delinquency		1.89^*** (1.73–2.08)		1.90^*** (1.73–2.08)		1.92^*** (1.75–2.11)		1.92^*** (1.75–2.11)
Anxiety^*time			χ²=0.01				χ²=0.00
Anxiety^*delinquency				χ²=0.96				χ²=0.79
AIC	1905.10	1708.44	1907.09	1709.48	1909.27	1705.84	1911.27	1707.05
SC	1937.93	1747.78	1946.48	1755.38	1942.11	1745.18	1950.67	1752.95

Model 1: baseline (time, anxiety); Model 2: time, anxiety, delinquency; Model 3: time, anxiety, interaction of time and anxiety; Model 4: time, anxiety, delinquency, interaction of anxiety and delinquency. 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<.10;

n=503; AIC Akaike's information criterion; SC Schwarz criterion