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Journal Article


Khazaie H, Zakiei A, Komasi S. Disaster Med. Public Health Prep. 2019; ePub(ePub): 1-8.


2Clinical Research Development Center,Imam Reza Hospital,Kermanshah University of Medical Sciences,Kermanshah,Iran.


(Copyright © 2019, Society for Disaster Medicine and Public Health, Publisher Cambridge University Press)






OBJECTIVE: The current study compares the measures of sleep quality and intensity of insomnia based on the clustering analysis of variables including dysfunctional beliefs and attitudes about sleep, experiential avoidance, personality traits of neuroticism, and complications with emotion regulation among the individuals struck by an earthquake in Kermanshah Province.

METHODS: This study is a cross-sectional study that was carried out among earthquake victims of Kermanshah Province (western Iran) in 2017. Data were gathered starting 10 days after the earthquake and lasted for 2 weeks; of 1,200 standard questionnaires distributed, 1,001 responses were received, and the analysis was performed using 999 participants. The data analysis was carried out using a cluster analysis (K-mean method).

RESULTS: Two clusters were identified, and there is a significant difference between these two clusters in regard to all of the variables. The cluster with higher mean values for the selected variables shows a higher intensity of insomnia and a lower sleep quality.

CONCLUSIONS: Considering the current results, it can be concluded that variables of dysfunctional attitudes and beliefs about sleep, experiential avoidance, the personality traits of neuroticism, and complications with emotion regulation are able to identify the clusters where there is a significant difference in regard to sleep quality and the intensity of insomnia. (Disaster Med Public Health Preparedness. 2019;page 1 of 8).

Language: en


cluster analysis; insomnia; psychological factors; sleep quality


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