Effects of a Comprehensive, Multiple Risky Behavior Prevention Program on High School Students

Table 5

Logistic regression analysis of gender, grade, and subsequent study years for substance-use risk behaviors.

		SE	Wald’s test ( ratio)	Odds ratio	95% CI
Lifetime alcohol use
Intercept	−1.09	0.44	6.29	0.34
Gender	−0.15	0.09	3.16	0.86	0.72, 1.02
Sophomore	0.54	0.11	25.34	1.72	1.39, 2.12
Junior	1.01	0.11	77.85	2.74	2.19, 3.43
Senior	1.84	0.14	162.25	6.28	4.73, 8.33
Pretest (2009) to 2010	0.68	0.19	12.43	1.98	1.35, 2.90
Pretest (2009) to 2011	0.47	0.13	12.72	1.61	1.24, 2.08
Pretest (2009) to 2012	0.34	0.10	10.95	1.40	1.15, 1.71
Pretest (2009) to 2013	0.27	0.08	10.44	1.30	1.11, 1.53
Drinking in the last 30 days
Intercept	−2.41	0.40	36.45	0.09
Gender	−0.08	0.08	1.01	0.92	0.79, 1.08
Sophomore	0.71	0.11	38.57	2.03	1.62, 2.53
Junior	1.22	0.11	115.79	3.38	2.70, 4.22
Senior	2.14	0.13	290.71	8.49	6.36, 10.85
Pretest (2009) to 2010	0.70	0.17	15.87	2.01	1.42, 2.83
Pretest (2009) to 2011	0.45	0.12	14.15	1.57	1.24, 1.99
Pretest (2009) to 2012	0.32	0.09	12.00	1.38	1.15, 1.65
Pretest (2009) to 2013	0.26	0.07	12.39	1.30	1.12, 1.50
Drinking 5 or more times in the last 30 days
Intercept	−3.35	0.42	65.01	0.03
Gender	0.23	0.09	7.08	1.26	1.06, 1.49
Sophomore	0.85	0.13	39.95	2.34	1.80, 3.05
Junior	1.31	0.13	99.47	3.69	2.86, 4.77
Senior	1.89	0.13	201.67	6.64	5.11, 8.63
Pretest (2009) to 2010	0.65	0.18	13.10	1.91	1.35, 2.72
Pretest (2009) to 2011	0.34	0.12	7.922	1.41	1.11, 1.79
Pretest (2009) to 2012	0.27	0.09	8.012	1.31	1.09, 1.58
Pretest (2009) to 2013	0.20	0.08	7.09	1.23	1.06, 1.43
Drinking and driving in the last year
Intercept	−6.02	0.55	119.13	0.00
Gender	0.40	0.11	12.43	1.50	1.20, 1.87
Sophomore	1.20	0.24	25.37	3.33	2.09, 5.32
Junior	1.75	0.23	58.42	5.73	3.66, 8.97
Senior	2.57	0.22	133.54	13.11	8.48, 20.29
Pretest (2009) to 2010	1.09	0.23	23.56	2.99	1.92, 4.65
Pretest (2009) to 2011	0.58	0.15	14.418	1.78	1.322, 2.40
Pretest (2009) to 2012	0.46	0.12	14.93	1.58	1.25, 2.00
Pretest (2009) to 2013	0.33	0.10	12.03	1.40	1.16, 1.69
Lifetime marijuana use
Intercept	−4.00	0.43	87.96	0.02
Gender	0.19	0.09	4.56	1.21	1.02, 1.43
Sophomore	0.91	0.14	40.63	2.48	1.87, 3.27
Junior	1.46	0.14	112.97	4.30	3.29, 5.63
Senior	2.08	0.14	221.50	7.97	6.07, 10.48
Pretest (2009) to 2010	0.81	0.18	20.07	2.25	1.58, 3.22
Pretest (2009) to 2011	0.55	0.12	19.12	1.73	1.35, 2.20
Pretest (2009) to 2012	0.37	0.10	14.75	1.45	1.20, 1.75
Pretest (2009) to 2013	0.33	0.08	18.08	1.39	1.20, 1.62
Marijuana in the last 30 days
Intercept	−5.74	0.51	126.30	0.00
Gender	0.35	0.11	10.18	1.41	1.14, 1.75
Sophomore	1.04	0.20	26.67	2.83	1.91, 4.21
Junior	1.39	0.19	51.12	4.03	2.75, 5.91
Senior	2.26	0.19	142.67	9.57	6.60, 13.89
Pretest (2009) to 2010	1.16	0.21	30.13	3.18	2.10, 4.80
Pretest (2009) to 2011	0.77	0.14	28.14	2.16	1.62, 2.87
Pretest (2009) to 2012	0.50	0.11	19.90	1.65	1.32, 2.05
Pretest (2009) to 2013	0.34	0.09	14.28	1.41	1.18, 1.68
Lifetime cocaine use
Intercept	−6.53	0.83	62.27	0.00
Gender	0.01	0.18	0.00	1.01	0.071, 1.44
Sophomore	1.11	0.34	10.54	3.04	1.55, 5.94
Junior	1.00	0.35	8.39	2.73	1.38, 5.38
Senior	1.84	0.33	32.18	6.32	3.34, 11.95
Pretest (2009) to 2010	1.28	0.35	13.70	3.59	1.86, 7.06
Pretest (2009) to 2011	0.86	0.24	13.07	2.36	1.48, 3.76
Pretest (2009) to 2012	0.38	0.18	4.55	1.46	1.03, 2.06
Pretest (2009) to 2013	0.36	0.15	6.13	1.44	1.08, 1.92
Cigarettes in the last 30 days
Intercept	−5.59	0.54	105.74	0.00
Gender	0.46	0.11	16.87	1.59	1.27, 1.98
Sophomore	1.03	0.20	25.59	2.81	1.88, 4.18
Junior	1.40	0.20	50.88	4.06	2.76, 5.97
Senior	1.82	0.19	87.53	6.17	4.22, 9.04
Pretest (2009) to 2010	0.84	0.22	14.21	2.32	1.50, 3.60
Pretest (2009) to 2011	0.58	0.15	14.06	1.79	1.32, 2.42
Pretest (2009) to 2012	0.43	0.12	12.92	1.54	1.21, 1.95
Pretest (2009) to 2013	0.40	0.10	16.79	1.49	1.23, 1.81

Note. The coefficients for grade contrast with freshman. CI: confidence interval.
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