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Table 1 Descriptions of main variables and other related variables (N = 2872)

From: Defending behaviors, bullying roles, and their associations with mental health in junior high school students: a population-based study

  N (%)
[Main Variables]
 Bullying role: Bullies 256 (9.5)
 Victims 218 (7.6)
 Bully-victims 106 (2.9)
 Bystanders 2,292 (80.0)
 Defending behaviors score (range: 1–5) 1.82 (0.03)a
 Social anxiety score (range: 1–3) 1.63 (0.01)a
 Depressive symptoms score (range:1–3) 1.65 (0.01)a
[Other related Variables – student characteristics]
 Sex: Girl 1,430 (49.4)
  Boy 1,442 (50.6)
 Grade: 7 899 (31.7)
  8 994 (33.4)
  9 979 (34.9)
 Aggressive tendency score (range: 1–5) 2.43 (0.03)a
 Communication skills score (range: 1–4) 2.87 (0.02)a
[Other related Variables –parental characteristics]
 Parents’ marital status: Not married 567 (18.2)
  Married 2,305 (81.8)
 Parents’ education: Junior high school 450 (13.4)
  Senior high school 1,664 (60.6)
  College/University 500 (17.5)
  Unknown 258 (8.5)
 Family activities score (range:1–5) 2.89 (0.03)a
 Family support score (range: 1–5) 3.12 (0.03)a
 Family conflict score (range: 1–5) 1.73 (0.02)a
 Punishment score (range: 1–5) 1.70 (0.02)a
  1. Note 1: percentages (%) and means were weighted by sampling probabilities
  2. Note 2: a: Mean (S.D)