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Table 3 Distribution of demographic variables by latent class

From: Clusters of alcohol and drug use and other health-risk behaviors among Thai secondary school students: a latent class analysis

  Class 1
(n = 22,417)
Class 2
(n = 2994)
Class 3
(n = 155)
Gender
 Male 9713 (43.3) 1924 (64.3) 139 (89.7)
 Female 12,704 (56.7) 1070 (35.7) 16 (10.3)
Age (years)
 12 2484 (11.1) 136 (4.5) 4 (2.6)
 13 9341 (41.7) 695 (23.2) 30 (19.4)
 14 3470 (15.5) 573 (19.1) 25 (16.1)
 15 7122 (31.8) 1590 (53.1) 96 (61.9)
Religion
 Buddhist 20,644 (92.1) 2849 (95.2) 125 (80.6)
 Muslim/Christian 1773 (7.9) 145 (4.8) 30 (19.4)
High school grade
 Grade 1 12,930 (56.8) 787 (29.8) 37 (24.5)
 Grade 3 9844 (43.2) 1854 (70.2) 114 (75.5)
GPA
 0–2.0 1892 (8.4) 570 (19) 56 (36.1)
 2.1–3.0 11,323 (50.5) 1700 (56.8) 70 (45.2)
 3.1–4.0 9202 (41.0) 724 (24.2) 29 (18.7)
Living status
 Alone or with friends/relatives 4260 (19) 634 (21.2) 33 (21.3)
 With parents 18,157 (81) 2360 (78.8) 122 (78.7)
School type
 Public 15,423 (68.8) 1902 (63.5) 99 (63.9)
 Private 6994 (31.2) 1092 (36.5) 56 (36.1)
Disdain from friends if use drugs
 Low level 11,109 (49.6) 2234 (74.6) 138 (89.0)
 High level 11,308 (50.4) 760 (25.4) 17 (11.0)
Perceived roughnessa of school
 Low level 15,729 (70.2) 1910 (63.8) 80 (51.6)
 High level 6688 (29.8) 1084 (36.2) 75 (48.4)
Alcohol use problem of family members
 No 14,991 (66.9) 1662 (55.5) 102 (65.8)
 Yes 7426 (33.1) 1332 (44.5) 53 (34.2)
Tobacco use problem of family members
 No 16,607 (74.1) 1938 (64.7) 98 (63.2)
 Yes 5810 (25.9) 1056 (35.3) 57 (36.8)
Drug use problem of family members
 No 22,095 (98.6) 2853 (95.3) 129 (83.2)
 Yes 322 (1.4) 141 (4.7) 26 (16.8)
Alcohol use problem of peers
 No 15,354 (68.5) 1199 (40.0) 47 (30.3)
 Yes 7063 (31.5) 1795 (60.0) 108 (69.7)
Tobacco use problem of peers
 No 9324 (41.6) 469 (15.7) 14 (9)
 Yes 13,093 (58.4) 2525 (84.3) 141 (91)
Drug use problem of peers
 No 16,638 (74.2) 1546 (51.6) 39 (25.2)
 Yes 5779 (25.8) 1448 (48.4) 116 (74.8)
  1. GPA grade point average
  2. aIncludes seven items: physical assault, drug use, suicide, rape or sexual assault, heavy drinking, group fighting and interpersonal quarrelling
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