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Table 2 Prevalence (%) of history of involvement in fights with firearm and/or cold weapon among 9th grade students attending public and private schools in Brazil, 2012

From: Involvement of school students in fights with weapons: prevalence and associated factors in Brazil

 

Male

Female

Total

Variables

%

95 % CI

%

95 % CI

%

95 % CI 

Sociodemographic characteristics

 Age group

   ≥ 14 years

11.47

(10.91–12.04)

6.20

(5.84–6.58)

8.54

(8.22–8.87)

  15 or over

17.96

(17.12–18.83)

9.80

(9.14–10.57)

14.30

(13.74–14.88)

 Ethnicity/skin color

  White

13.20

(12.45–13.98)

6.39

(5.88–6.94)

9.81

(9.35–10.29)

  Black

16.60

(15.30–17.98)

8.53

(7.47–9.72)

13.01

(12.13–13.94)

  Yellow

14.75

(12.34–17.54)

7.40

(6.00–9.08)

10.62

(9.27–12.15)

  Brown

12.95

(12.25–13.69)

7.12

(6.65–7.63)

9.66

(9.25–10.09)

  Indigenous

16.78

(14.30–19.59)

11.11

(9.01–13.62)

13.83

(12.18–15.67)

 Type of school

  Private

12.01

(11.01–13.08)

5.31

(4.64–6.07)

8.61

(8.00–9.26)

  Public

14.21

(13.68–14.75)

7.56

(7.19–7.95)

10.72

(10.40–11.05)

 Employment

  No

11.94

(11.45–12.45)

6.60

(6.27–6.95)

9.03

(8.74–9.33)

  Yes

22.78

(21.45–24.17)

12.94

(11.63–14.37)

19.18

(18.19–20.20)

Health–risk behaviors

 Cigarette smoking in the previous 30 days

  No

12.12

(11.67–12.59)

6.25

(5.93–6.57)

9.05

(8.78–9.33)

  Yes

45.34

(42.31–48.40)

25.00

(22.47–27.71)

34.83

(32.80–36.93)

 Alcohol intake in the previous 30 days

  No

9.18

(8.73–9.65)

4.92

(4.59–5.26)

6.98

(6.70–7.27)

  Yes

27.51

(26.30–28.77)

13.38

(12.56–14.24)

19.91

(19.18–20.66)

 Use of illicit drugs

  No

12.5

(12.01–12.94)

6.64

(6.32–6.70)

9.41

(9.10–9.69)

  Yes

59.1

(55.13–63.00)

33.70

(29.30–38.41)

48.60

(44.93–51.19)

Mental Health

 Insomnia

  No

13.07

(12.59–13.56)

6.30

(5.97–6.64)

9.65

(9.36–9.95)

  Yes

24.38

(22.10–26.82)

13.24

(12.05–14.53)

16.71

(15.60–17.87)

 Close friends

  One or more

13.29

(12.82–13.78)

7.05

(6.72–7.39)

10.00

(9.71–10.29)

  None

24.03

(21.27–27.03)

11.97

(9.51–14.95)

19.53

(17.53–21.70)

Parental supervision

 Living with father and/or mother

  Yes

13.58

(13.11–14.08)

6.91

(6.58–7.26)

10.13

(9.84–10.43)

  No

18.78

(16.57–21.21)

11.40

(9.88–13.11)

14.43

(13.13–15.83)

 Skipping classes without permission

  No

10.99

(10.51–11.50)

5.46

(5.14–5.80)

8.03

(7.74–8.32)

  Yes

21.09

(20.00–22.21)

12.67

(11.78–13.59)

17.02

(16.31–17.76)

Context of violence

 Suffering family violence

  No

11.82

(11.37–12.29)

5.93

(5.62–6.27)

8.78

(8.50–9.06)

  Yes

32.11

(29.98–34.33)

16.85

(15.45–18.35)

23.47

(22.23–24.77)

 Suffering bullying

  No

13.40

(12.92–13.9)

6.64

(6.32–6.98)

9.84

(9.55–10.14)

  Yes

18.37

(16.59–20.29)

14.68

(12.85–16.72)

16.63

(15.34–18.01)

 Unsafe on the way to and from and/or at school

  No

11.58

(11.13–12.06)

6.22

(5.90–6.56)

8.76

(8.48–9.05)

  Yes

28.84

(27.04–30.69)

14.62

(13.30–16.05)

21.86

(20.71–23.05)

  1. 95 % CI 95 % confidence interval