From: Involvement of school students in fights with weapons: prevalence and associated factors in Brazil
 | Sex | |||||||
---|---|---|---|---|---|---|---|---|
Male | Female | |||||||
Variables | crude PR 95 % CI | p | adjusted PR* 95 % CI | p | crude PR 95 % CI | p | adjusted PR* 95 % CI | p |
Sociodemographic characteristics | ||||||||
 Age group |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  ≥14 years | 1 |  | 1 |  | 1 |  | 1 |  |
  15 or over | 1.56 (1.46-1.68) |  | 1.17 (1.09-1.25) |  | 1.58 (1.44-1.74) |  | 1.20 (1.09-1.32) |  |
 Ethnicity/skin color |  | <0.001 |  | 0.056 |  | <0.001 |  | 0.012 |
  White |  |  | 1 |  | 1 |  | 1 |  |
  Black | 1.26 (1.14-1.39) |  | 1.09 (0.99-1.20) |  | 1.33 (1.14-1.56) |  | 1.19(1.02-1.39) |  |
  Yellow | 1.12 (0.93-1.34) |  | 0.90 (0.76-1.07) |  | 1.16 (0.93-1.45) |  | 1.11 (0.89-1.38) |  |
  Brown | 0.98 (0.91-1.06) |  | 0.97 (0.89-1.04) |  | 1.11 (1.00-1.24) |  | 1.10 (0.99-1.22) |  |
  Indigenous | 1.27 (1.07-1.50) |  | 1.10 (0.94-1.29) |  | 1.74 (1.39-2.17) |  | 1.44 (1.15-1.80) |  |
 Type of school |  | <0.001 |  |  |  | <0.001 |  |  |
  Private | 1 |  | - |  | 1 |  | - |  |
  Public | 1.18 (1.08-1.30) |  | - |  | 1.42 (1.23-1.64) |  | - |  |
 Employment |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 1.91 (1.77-2.05) |  | 1.32 (1.22-1.42) |  | 1.96 (1.74-2.20) |  | 1.35 (1.20-1.52) |  |
Health-risk behaviors | ||||||||
 Cigarette smoking in the previous 30 days |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 3.74 (3.46-4.04) |  | 1.41 (1.27-1.57) |  | 4.00 (3.56-4.50) |  | 1.58 (1.36-1.84) |  |
 Alcohol intake in the previous 30 days |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 3.00 (2.80-3.20) |  | 2.07 (1.92-2.24) |  | 2.72 (2.48-2.98) |  | 1.77(1.60-1.97) |  |
 Use of illicit drugs |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 4.74 (4.39-5.12) |  | 1.66(1.48-1.86) |  | 5.08 (4.40-5.87) |  | 1.70(1.43-2.03) |  |
Mental Health | ||||||||
 Insomnia |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 1.87 (1.68-2.07) |  | 1.23 (1.11-1.36) |  | 2.10 (1.89-2.34) |  | 1.37 (1.22-1.53) |  |
 Close friends |  | <0.001 |  | <0.001 |  | <0.001 |  | 0.011 |
  One or more | 1 |  | 1 |  | 1 |  | 1 |  |
  None | 1.81 (1.60-2.05) |  | 1.45 (1.28-1.64) |  | 1.70 (1.35-2.14) |  | 1.36(1.07-1.72) |  |
Parental supervision | ||||||||
 Living with mother and/or father |  | <0.001 |  |  |  |  |  |  |
  Yes | 1 |  | - |  | 1 |  | 1 |  |
  No | 1.38 (1.22-1.57) |  | - |  | 1.65 (1.42-1.92) |  | 1.29 (1.11-1.50) |  |
 Skipping classes without permission |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 1.92(1.79-2.06) |  | 1.30 (1.20-1.39) |  | 2.32 (2.11-2.55) |  | 1.46 (1.31-1.61) |  |
Context of violence | ||||||||
 Suffering family violence |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 2.72 (2.51-2.94) |  | 1.62 (1.49-1.76) |  | 2.84 (2.57-3.14) |  | 1.72 (1.54-1.93) |  |
 Suffering bullying |  | <0.001 |  |  |  | <0.001 |  | <0.001 |
  No | 1 |  | - |  | 1 |  | 1 |  |
  Yes | 1.37 (1.23-1.53) |  | - |  | 2.21 (1.92-2.54) |  | 1.55 (1.34-1.79) |  |
 Unsafe on the way to and from and/or at school |  | <0.001 |  | <0.001 |  | <0.001 |  | <0.001 |
  No | 1 |  | 1 |  | 1 |  | 1 |  |
  Yes | 2.49 (2.31-2.68) |  | 1.50 (1.38-1.63) |  | 2.35 (2.11-2.62) |  | 1.36 (1.21-1.54) |  |