Abstract
Purpose
This study aims at identifying individual- and school-level factors associated with unintentional injuries to Korean adolescents at school by applying multilevel modeling.
Methods
From the database of the eleventh Korea Youth Risk Behavior Web-based Survey (KYRBS), the researchers selected 68,043 adolescents from the 7th to the 12th grades. Data were analyzed using x2 test for prevalence and multilevel modeling for related factors of unintentional injuries at school.
Results
About 22.9 percent of the adolescents had treatment experiences for unintentional injuries at school in the past 12 months. At the individual level, the significant factors associated with unintentional injuries at school included gender, grade, academic achievement, current smoking, alcohol consumption, frequency of high caffeine intake, depression, and relief of fatigue after sleep. At the group level, the significant factors included number of physical education per week and safety education.
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Table 1.
Variables | Characteristics | Categories |
Injured prevalence |
Injured |
No injured |
x2 | p |
---|---|---|---|---|---|---|---|
(%)‡ | n† (%)‡ | n† (%)‡ | |||||
Total | 22.9 | 15,533 (100.0) | 52,510 (100.0) | ||||
Individual variables | Gender | Male | 27.4 | 9,647 (62.5) | 25,557 (49.1) | 864.02 | <.001 |
Female | 17.9 | 5,886 (37.5) | 26,953 (50.9) | ||||
Grade | 7 | 24.1 | 2,539 (14.5) | 8,247 (13.5) | 143.50 | <.001 | |
8 | 25.8 | 2,885 (17.6) | 8,557 (15.0) | ||||
9 | 24.4 | 2,939 (18.8) | 9,132 (17.3) | ||||
10 | 20.7 | 2,324 (15.8) | 8,798 (17.9) | ||||
11 | 21.9 | 2,456 (16.9) | 8,657 (17.8) | ||||
12 | 20.8 | 2,390 (16.4) | 9,119 (18.6) | ||||
Academic achievement | High | 23.6 | 6,090 (39.0) | 19,600 (37.3) | 15.53 | .001 | |
Middle | 22.1 | 4,172 (27.0) | 14,780 (28.2) | ||||
Low | 22.6 | 5,271 (34.0) | 18,130 (34.5) | ||||
Current smoking | Yes | 31.0 | 1,612 (10.5) | 3,511 (6.9) | 216.33 | <.001 | |
No | 22.2 | 13,921 (89.5) | 48,999 (93.1) | ||||
Alcohol consumption | Yes | 29.5 | 3,272 (21.5) | 7,749 (15.3) | 337.28 | <.001 | |
No | 21.5 | 12,261 (78.5) | 44,761 (84.7) | ||||
Frequency of high caffeine intake | No | 22.0 | 13,167 (84.7) | 46,669 (89.1) | 252.21 | <.001 | |
<1/day | 28.8 | 2,166 (14.0) | 5,516 (10.3) | ||||
≥1/day | 38.7 | 200 (1.3) | 325 (0.6) | ||||
Depression | Yes | 30.5 | 4,860 (31.5) | 11,034 (21.2) | 701.65 | <.001 | |
No | 20.5 | 10,673 (68.5) | 41,476 (78.8) | ||||
Obesity | Yes | 23.3 | 1,691 (11.1) | 5,480 (10.8) | 1.78 | .235 | |
No | 22.6 | 13,281 (88.9) | 45,571 (89.2) | ||||
Relief of fatigue after sleep | Very enough | 22.5 | 1,313 (8.2) | 4,564 (8.4) | 73.18 | <.001 | |
Enough | 21.4 | 2,942 (18.4) | 10,707 (20.0) | ||||
So-so | 22.2 | 5,059 (32.5) | 17,732 (33.8) | ||||
Not enough | 23.4 | 4,130 (27.1) | 13,635 (26.3) | ||||
Never enough | 26.0 | 2,089 (13.8) | 5,872 (11.6) | ||||
School variables | Number of physical education per week | 0 | 16.6 | 1,816 (11.9) | 9,160 (17.6) | 715.82 | <.001 |
1 | 19.9 | 2,390 (15.4) | 9,448 (18.4) | ||||
2 | 21.7 | 4,403 (29.7) | 16,008 (31.8) | ||||
3 | 28.3 | 6,924 (43.0) | 17,894 (32.2) | ||||
Safety education | Yes | 24.0 | 13,778 (88.2) | 43,705 (82.5) | 287.18 | <.001 | |
No | 16.6 | 1,755 (11.8) | 8,805 (17.5) |