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Table 1 Reliability of Bull-M

From: Design and validation of a self-administered test to assess bullying (bull-M) in high school Mexicans: a pilot study

Item

Internal consistency1

Reproducibility 4

rs 2

α3

Test

Retest

1

.10

.79

1.9 ± 0.09

1.9 ± 0.09

2

.48

.72

0.7 ± 0.06

0.8 ± 0.06

3

.40

.73

0.5 ± 0.05

0.9 ± 0.05*

4

.53

.71

0.8 ± 0.06

0.9 ± 0.06

5

.47

.72

0.7 ± 0.06

0.9 ± 0.06*

6

.44

.72

0.9 ± 0.06

1.0 ± 0.06

7

.49

.72

0.4 ± 0.05

0.6 ± 0.05*

8

.52

.71

0.8 ± 0.06

0.9 ± 0.06

9

.55

.71

0.7 ± 0.06

0.9 ± 0.06*

10

.34

.74

1.2 ± 0.08

1.1 ± 0.06

  1. 1 Cronbach’s α for total test = 0.75; 2Item-total correlation; 3 Adjusted Cronbach’s α if item is deleted; 4mean ± EE; *statistical differences between test (p < 0.05).
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BMC Public Health

ISSN: 1471-2458

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