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. 2015 May 1;10(5):e0125189. doi: 10.1371/journal.pone.0125189

Table 1. Demographic characteristics of 1,606 high school students in Vietnam.

Variable Total
Age (N = 1,535)(Mean ± SD) 16.5 ± 1.0
Gender (N = 1,599) (n(%))
Female 729 (45.6)
Male 870 (54.4)
Religion (N = 1,533) (n(%))
No religion 1048 (68.4)
Buddhism 301 (19.6)
Christianity & others 21 (1.4)
Don’t know 163 (10.6)
Residence (N = 1,606) (n(%))
Urban 817 (50.9)
Rural 789 (49.1)
Socioeconomic status (N = 1,526) (n(%))
Lowest 25% 382 (25.0)
26–50% 380 (24.9)
51–75% 347 (22.7)
Highest 25% 417 (27.3)
Family composition (N = 1,596) (n(%))
Both parents 1409 (88.3)
Only one parent 121 (7.6)
One parent and a stepparent 34 (2.1)
None of parents 32 (2.0)
Mother’s highest educational attainment (N = 1,562) (n(%))
Up to secondary school (grade 9) 398 (25.5)
Completion of high school (grade 12) 721 (46.2)
Don’t know 443 (28.4)
Father’s highest educational attainment (N = 1,562) (n(%))
Up to secondary school (grade 9) 424 (27.1)
Completion of high school (grade 12) 705 (45.1)
Don’t know 433 (27.7)
Number of siblings (N = 1,417) (n (%))
Only child 86 (6.1)
One sibling 767 (54.1)
Two siblings 358 (25.3)
Three siblings 132 (9.3)
Four or more siblings 74 (5.2)
Perception of family happiness (N = 1,565) (n(%))
Happy/ very happy 1399 (89.4)
Unhappy/ Very unhappy 166 (10.6)