Table 3.

Unadjusted and adjusted logistic regression analyses of school environment factors and alcohol drinking.

	Model 1						Model 2
	B	Wald	p	OR	95% CI		B	Wald	p	OR	95% CI
					Lower	Upper					Lower	Upper
Ever consumed alcohol
Learning in class	0.090	6.924	0.009 *	1.094	1.023	1.169	0.088	6.040	0.014 *	1.092	1.018	1.172
Learning in school (without class)	0.305	79.719	0.000 *	1.356	1.268	1.450	0.232	42.187	0.000 *	1.261	1.176	1.353
Prohibition of alcohol in school	0.032	0.711	0.399	1.032	0.959	1.111	0.073	3.379	0.066	1.076	0.995	1.163
Seeing my classmates drinking	0.246	61.360	0.000 *	1.279	1.203	1.361	0.132	15.893	0.000*	1.142	1.070	1.218
Some of my friends drinking (0 = ref.)
≤50%	1.764	2941.076	0.000 *	5.838	5.478	6.223	1.633	2236.366	0.000 *	5.120	4.785	5.479
>50%	3.125	2437.566	0.000 *	22.762	20.106	25.768	2.807	1785.153	0.000 *	16.563	14.541	18.867
My friends persuade myself drinking	−0.298	56.594	0.000 *	0.742	0.686	0.802	−0.195	21.284	0.000 *	0.823	0.758	0.894
The frequency of attending parties (Almost no = ref.)
<1 time per week	0.671	473.149	0.000 *	1.957	1.842	2.079	0.581	315.469	0.000 *	1.787	1.676	1.905
≥1times per week	0.331	24.852	0.000 *	1.392	1.222	1.585	0.254	13.233	0.000 *	1.289	1.124	1.477
Consumed alcohol within a year
Learning about the dangers in class	0.016	0.193	0.661	1.017	0.945	1.094	0.012	0.100	0.752	1.012	0.938	1.093
Learning about the dangers in school (Without class)	0.254	45.958	0.000 *	1.290	1.198	1.388	0.196	25.213	0.000 *	1.217	1.127	1.314
Prohibition of alcohol in school	0.145	13.037	0.000 *	1.156	1.069	1.251	0.160	14.192	0.000 *	1.173	1.080	1.274
Seeing my classmates drinking	0.256	57.768	0.000 *	1.292	1.209	1.380	0.163	21.254	0.000 *	1.178	1.099	1.262
Some of my friends drinking (0 = ref.)
≤50%	1.883	2290.314	0.000 *	6.571	6.084	7.098	1.746	1788.211	0.000 *	5.734	5.288	6.218
>50%	3.323	2853.278	0.000 *	27.747	24.562	31.345	3.003	2105.252	0.000 *	20.148	17.722	22.905
My friends persuade myself drinking	−0.308	54.780	0.000 *	0.735	0.677	0.797	−0.195	19.488	0.000 *	0.823	0.754	0.897
The frequency of attending parties (Almost no = ref.)
<1 time per week	0.982	832.408	0.000 *	2.669	2.497	2.853	0.903	635.445	0.000 *	2.468	2.300	2.647
≥1times per week	0.583	63.498	0.000 *	1.791	1.552	2.067	0.501	42.965	0.000 *	1.651	1.421	1.917
Consumed alcohol within a month
Learning about the dangers in class	−0.095	5.775	0.016 *	0.909	0.841	0.983	−0.064	2.397	0.122	0.938	0.865	1.017
Learning about the dangers in school (Without class)	0.115	8.227	0.004 *	1.122	1.037	1.213	0.056	1.833	0.176	1.058	0.975	1.147
Prohibition of alcohol in school	0.235	33.153	0.000 *	1.265	1.168	1.370	0.240	31.662	0.000 *	1.271	1.169	1.382
Seeing my classmates drinking	0.289	69.329	0.000 *	1.334	1.247	1.428	0.242	44.836	0.000 *	1.274	1.187	1.367
Some of my friends drinking (0 = ref.)
≤50%	1.703	920.518	0.000 *	5.490	4.918	6.128	1.607	765.711	0.000 *	4.988	4.451	5.589
>50%	2.838	1994.500	0.000 *	17.077	15.077	19.342	2.598	1501.712	0.000 *	13.433	11.779	15.319
My friends persuade myself drinking	−0.272	46.826	0.000 *	0.762	0.705	0.823	−0.181	18.680	0.000 *	0.834	0.768	0.906
The frequency of attending parties (Almost no = ref.)
<1 time per week	0.922	549.655	0.000*	2.514	2.328	2.716	0.846	430.608	0.000 *	2.331	2.152	2.524
≥1times per week	0.891	142.377	0.000*	2.438	2.106	2.822	0.813	111.005	0.000 *	2.254	1.938	2.622

* p < 0.05. OR: odds ratio. CI: confidence interval. Model 1: nonadjusted model. Model 2: adjusted for age, gender, age, city, and location.