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Table 1 Prevalence of involvement in health risk behaviours and previous year suicidal thoughts and plans among the study sample

From: Poly-victimisation and health risk behaviours, symptoms of mental health problems and suicidal thoughts and plans among adolescents in Vietnam

Variables Female (N = 729)a Male (N = 870)a Total sampleb
n % (95 % CI) n % (95 % CI) n % (95 % CI)
Involvement in health risk behaviours
Ever smoked cigarette** (N = 1.599) 101 13.9 (11.4; 16.4) 394 45.5 (42.2; 48.8) 498 31.1 (28.9; 33.4)
Ever drink alcohol** (N = 1.602) 430 59.1 (55.5; 62.6) 680 78.4 (75.7; 81.2) 1115 69.6 (67.3; 71.9)
Ever used drugs* (N = 1.602) 6 0.8 (0.2; 1.5) 25 2.9 (1.8; 4.0) 31 1.9 (1.3; 2.6)
Physical fighting in last 12 months** (N = 1.602) 92 12.6 (10.2; 15.1) 209 24.1 (21.2; 26.9) 302 18.9 (16.9; 20.8)
Carrying a weapon in last 30 days** (N = 1.599) 17 2.3 (1.2; 3.5) 64 7.4 (5.6; 9.1) 81 5.1 (4.0; 6.1)
Having had two or more sexual partners* (N = 1.533) 22 3.2 (1.9; 4.5) 50 5.9 (4.3; 7.5) 72 4.6 (3.6; 5.7)
Any health risk behaviours** (N = 1586) 451 63.2 (59.6; 66.7) 725 83.8 (81.4; 86.3) 1181 74.4 (72.3-76.6)
Suicidal thoughts and plans
Past year suicidal thought (N = 1.599) 156 21.4 (18.5; 24.5) 69 7.9 (6.2; 9.8) 225 14.1 (12.4–15.8)
Past year suicidal plan (N = 1.601) 57 7.8 (5.9; 9.8) 35 4.0 (2.7; 5.3) 92 5.7 (4.6–6.9)
Any suicidal ideas (thoughts or plans) in the previous year (N = 1599) 159 21.9 (18.9; 25.0) 74 8.5 (6.7; 10.4) 233 14.6 (12.816.3)
  1. CI Confidence interval
  2. * p < 0.05, ** p < 0.001 in Chi square tests for comparison between females and males
  3. aFor each row, the total N of females and males may due to missing data
  4. bTotal n of females and males may not add up to total sample n due to missing data about gender