Validity and Reliability of Bergen Insomnia Scale (BIS) Among Adolescents

Year 2018, Volume: 8 Issue: 4, 268 - 275, 28.12.2018

Tuba Bay Ayşe Ergun

Abstract

Objective: The aim of this research was to examine validity and reliability of the

Turkish version of the Bergen Insomnia Scale (BIS) in adolescents.

Methods: The scale was applied to a total of 1293 adolescents and 110 students

were retested four weeks later. While content and construct validity analyses were

carried out for validity of the scale, internal consistency and test-retest analysis was

used for the reliability. Content validity of the scale was evaluated by opinions from

10 experts, construct validity via confirmatory factor analysis, internal consistency via

Cronbach’s alpha reliability coefficient, test-retest results via Pearson’s correlation

analysis.

Results: Cronbach’s alpha reliability coefficient of Bergen Insomnia Scale was found

as 0.72. Item – total correlations were ≥0.36 and test-retest correlation was 0.74.

Content validity index was found to be 99%, there was agreement between experts,

the items in the scale were suitable for our culture, and it represented the structure

which was intended to be measured. Confirmatory factor analysis confirmed the

structure of BIS consisting of 6 questions and 2 factors.

Conclusion: Bergen insomnia scale was found to be reliable and valid. The scale

can be used to measure insomnia in Turkish adolescents.

Keywords

Bergen Insomnia Scale, validity, reliability

References

• [1] American Academy of Sleep Medicine. International Classification of Sleep Disorders. Diagnostic and Coding Manual, 3rd edn. American Academy of Sleep Medicine, Westchester, IL, 2014.