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Table 2 Generalized Partial Credit Model (GPCM) of items in the victim scale of Brazilian Portuguese version of the Olweus Bully/Victim Questionnaire (QBO), assuming variable discriminating power across items

From: Construct validity and reliability of Olweus Bully/Victim Questionnaire – Brazilian version

Item Severity of response category Discrimination Reliabilityc
1 to 2a 2 to 3a
20 Somebody said bad things about me or my family 32.5 38.7 2.13 0.84
15 I was followed inside or outside the school 40.1 44.7 1.88 0.85
3 I was threatened 34.1 40.5 1.77 0.85
12 People laughed and pointed at me 34.3 39.8 1.57 0.84
19 Somebody falsely accused me of snitching things from my classmates 35.8 40.6 1.48 0.84
21 Somebody tried to make other dislike me 34.8 40.4 1.47 0.85
7 Somebody yelled at me 31 38.6 1.43 0.84
23 Somebody used the Internet or a cell phone to harm/offend me 41.3 43.3 1.42 0.85
13 Somebody gave me nicknames I didn’t like 32.1 36.9 1.33 0.84
14 I was cornered/pushed against a wallb 45.8 41.7 1.28 0.85
9 I was insulted because of a physical characteristic 35.8 38.2 1.23 0.85
17 I was not allowed to join a group of classmates 38.9 43.5 1.19 0.85
18 I was totally ignored by others 37.8 45.1 1.19 0.85
2 Somebody pulled my hair or scratched me 38.9 44.9 1.11 0.85
1 Somebody punched, kicked, or pushed me 34.9 43.6 1.1 0.85
10 I was humiliated because of my sexual preference of mannerismsb 50 39.9 1.09 0.85
16 I was sexually harassedb 51.1 41.3 1.04 0.85
22 I was forced to physically harm a classmateb 48.7 41.8 1.03 0.85
6 Somebody broke my things 36.4 43.6 1.01 0.86
8 I was insulted because of my color or raceb 43.6 41.9 0.96 0.85
5 Somebody snatched my money or belongings without my consentb 46.9 45.5 0.92 0.85
4 I was forced to hand over my money or belongingsb 55.2 43.1 0.88 0.85
11 Somebody made fun of my accentb 47.7 41.9 0.86 0.85
  1. aValues correspond to intersections between response categories
  2. bItems with a high degree of intersection between categories 1 and 2
  3. cCronbach’s α coefficient excluding each item