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. 2017 Oct 12;28(3):280–289. doi: 10.1017/S2045796017000488

Table 1.

Sample characteristics (%)

Total (n = 11 831) Male (n = 6018) Female (n = 5813) χ2/t p
Age 21.89 0.001
12 4.5 4.8 4.2
13 16.9 18.3 15.4
14 13.3 13.0 13.5
15 22.3 21.9 22.7
16 30.6 29.9 31.3
17 10.5 10.1 10.9
18 1.9 1.9 2.0
Mean (s.d.) 14.97 (1.45) 14.92 (1.47) 15.01 (1.44) 3.80 0.000
Chronic disease/disability 4.0 4.8 3.2 20.56 0.000
Ever smoking 21.7 32.3 10.7 813.46 0.000
Ever drinking 37.2 48.6 25.4 680.34 0.000
Negative life events (No.)
Mean (s.d.) 35.96 (31.37) 36.84 (32.62) 35.07 (29.98) 3.07 0.002
Internalising problems*
Mean (s.d.) 11.40 (9.12) 11.26 (9.31) 11.55 (8.90) 1.71 0.087
Externalising problems
Mean (s.d.) 8.92 (7.58) 9.95 (8.23) 7.85 (6.68) 15.24 0.000
Hopelessness
Mean (s.d.) 4.67 (3.31) 4.97 (3.40) 4.37 (3.19) 9.81 0.000
Impulsiveness
Mean (s.d.) 33.43 (8.12) 33.38 (8.30) 33.48 (7.95) 0.65 0.519
Friend/acquaintance SA 8.2 7.3 9.2 14.50 0.000
Friend/acquaintance suicide 5.2 5.0 5.3 0.37 0.545
Family suicide attempt history 3.3 3.6 3.0 3.63 0.057
Family suicide history 3.6 3.6 3.6 0.01 0.905
Family economic status 97.73 0.000
Excellent 2.4 3.2 1.6
Good 17.3 18.8 15.9
Fair 68.1 65.0 71.2
Poor 10.7 10.9 10.5
Very poor 1.5 2.2 0.8
Parental relationship 18.89 0.000
Excellent 41.5 40.5 42.4
Good 26.9 28.1 25.7
Fair 24.9 25.4 24.4
Poor 3.0 2.8 3.2
Separated/divorced/died 3.7 3.3 4.2
Father education 1.84 0.766
Primary school 13.5 13.2 13.8
Middle school 53.7 53.6 53.7
High school 18.4 18.5 18.2
Professional school 7.9 7.9 7.9
College or above 6.6 6.9 6.3
Father occupation: farmer 37.0 33.5 40.6 60.00 0.000
*

Excluding self-harm and suicidal thought.