The Moroccan dialect version of the Insomnia Severity Index

• Published in: Middle East current psychiatry (Cairo) 2022-02, Vol.29 (1), p.1-6, Article 11
• Main Authors: Oneib, Bouchra, El Filali, Abdelilah, Abda, Naima
• Format: Article
• Language: English
• Subjects: Insomnia; Insomnia Severity Index; Medicine; Medicine & Public Health; Moroccan dialect; Psychiatry; Sleep
• ISSN: 2090-5416; 2090-5416
• DOI: 10.1186/s43045-022-00182-4

Background The objective of the present study was to translate and linguistically validate in Moroccan dialect the original English version of the Insomnia Severity Index (ISI). The translation and adaptation of this scale are obtained by using the process forward translations and backward translations. The participants filled out the final questionnaire two times with an interval of 10 days. Cronbach’s alpha coefficient assesses the acceptability and internal reliability. As for the test-retest reproducibility, we used the inter-class correlation coefficient (ICC) (95% confidence interval (CI)) and the kappa coefficient, as well as the convergent validity for each scale. Results The sample included 120 subjects, 49 men (40.8%) and 71 women (59.2%). The mean age of participants was 29.23 ± 6.69 years. The translated version was quite acceptable. The Cronbach’s alpha coefficient was 0.83. The CCI (95% CI) was 0.99 (0.989, 0.995), while the kappa coefficient was 0.76. The correlations between the items of each questionnaire and its score showed good to strong positive correlations. Conclusions These results concluded that psychometric properties are adequate compared to the original version. Thus, this translated version had to be used for the sleep assessment in the Moroccan population.