Table 4 Summarized statistics, threshold, coefficients, estimated odds ratio, and 95% confidence interval from ordinal logistic regression of the severity of alcohol use disorder

 No Alcohol Use disorder (=1)

3.007

<  0.001

 Mild Alcohol Use Disorder (=2)

4.329

<  0.001

 Moderate Alcohol Use Disorder (=3)

5.521

<  0.001

Coefficient

(β)

 Parental supply only (=1)

0.179

0.281

0.596

1.197

0.616

2.322

 Friend/siblings supply only (=1)

1.043

14.265

< 0.001

2.838

1.652

4.877

 Relatives supply only (=1)

−0.286

0.411

0.521

0.751

0.313

1.803

 Both parental and friend/siblings supply (=1)

1.519

21.453

< 0.001

4.569

2.402

8.691

 Both parental and relatives supply (=1)

1.004

7.309

0.007

2.730

1.318

5.654

 Both friend/siblings and relatives supply (=1)

1.269

20.489

< 0.001

3.556

2.053

6.158

 All parental, friend/siblings, and relatives supply (=1)

1.692

43.969

< 0.001

5.433

3.294

8.959

 Binge drinking 2–3 times per month (=1)

2.490

42.184

< 0.001

12.057

5.688

25.558

 Picture (=1)

0.149

0.269

0.604

1.161

0.661

2.038

 Video clip (=1)

−0.035

0.013

0.908

0.966

0.534

1.745

 Have alcohol flush reaction (=1)

1.148

26.634

< 0.001

3.151

2.038

4.873

 Female students (= 1)

−0.047

0.084

0.772

0.954

0.694

1.312

 Family economic status (total income less than average national expenditures =1)

0.842

28.412

< 0.001

2.321

1.703

3.164

 Do not live with parents (=1)

0.704

14.606

< 0.001

2.022

1.409

2.902

 Academic performance (GPA less than 2.5 = 1)

0.652

9.162

0.002

1.920

1.259

2.930

 Live in Greater Bangkok (=1)

0.151

0.695

0.405

1.164

0.815

1.662