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Table 1 Characteristics of the 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

 

Total

 

Variables

%

95 % CI

Sociodemographic characteristics

 Sex

  Female

52.16

(51.69–52.62)

  Male

47.84

(47.38–48.31)

 Age group

   < 11

0.00

(0.00–0.10)

  12

0.73

(0.66–0.81)

  13

22.13

(21.73–22.54)

  14

45.55

(45.08–46.02)

  15

18.35

(18.00–18.71)

  16

8.37

(8.13–8.63)

  17

3.19

(3.03–3.35)

  18

0.97

(0.89–1.15)

   ≥ 19

0.67

(0.61–0.74)

 Ethnicity/skin color

  White

36.78

(36.32–37.23)

  Black

13.36

(13.03–13.69)

  Yellow

4.10

(3.92–4.28)

  Brown

42.24

(41.78–42.71)

  Indigenous

3.53

(3.36–3.70)

 Type of school

  Private

17.2

(16.8–17.5)

  Public

82.8

(82.5–83.2)

 Employment

  No

86.86

(86.54–87.16)

  Yes

13.14

(12.84–13.46)

Health–risk behaviors

 Cigarette smoking in the previous 30 days

  No

94.93

(94.71–95.14)

  Yes

5.07

(4,86–5.29)

 Alcohol intake in the previous 30 days

  No

73.91

(73.49–74.32)

  Yes

26.09

(25.68–26.51)

 Use of illicit drugs

  No

97.60

(97.44–97.74)

  Yes

2.40

(2.26–2.56)

Mental Health

 Insomnia

  No

90.30

(90.01–90.58)

  Yes

9.70

(9.42–9.99)

 Close friends

  One or more

96.50

(96.32–96.67)

  None

3.50

(3.33–3.68)

Parental supervision

 Living with mother and/or father

  Yes

94.60

(94.40–94.80)

  No

5.40

(5.20–5.60)

 Skipping classes without permission

  No

74.19

(73.76–74.61)

  Yes

25.81

(25.39–26.24)

Context of violence

 Suffering family violence

  No

89.40

(89.10–89.69)

  Yes

10.60

(10.31–10.90)

 Suffering bullying

  No

92.83

(92.58–93.08)

  Yes

7.17

(6.92–7.42)

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

  No

87.86

(87.5–88.2)

  Yes

12.14

(11.8–12.5)

  1. 95 % CI 95 % confidence interval