Psychometric properties of the severity of the dependence scale for Khat (SDS-Khat) in polysubstance users

BMC Psychiatry

Mohammed Ali Yunus Khan¹  Ahmed S Bahammam²  Majed Alamri³  Md. Dilshad Manzar³  Salahuddin Mohammed⁴  Vijay Kumar Chattu⁵  Seithikurippu R Pandi-Perumal⁶ 

[1] Department of Biomedical Sciences, College of Medicine and Health Sciences, Mizan-Tepi University, (Mizan Campus);Department of Medicine, College of Medicine, The University Sleep Disorders Center, King Saud University;Department of Nursing, College of Applied Medical Sciences, Majmaah University;Department of Pharmacy, College of Medicine and Health Sciences, Mizan-Tepi University (Mizan Campus);Faculty of Medical Sciences, University of West Indies;Somnogen Canada Inc;

关键词: SDS-Khat;    Addiction;    Alcohol;    Catha edulis;    Consistency;    Factor analysis;   

DOI  :  10.1186/s12888-018-1917-2

来源: DOAJ

【 摘 要 】

Abstract Background Current evidence suggests that the addiction on one substance may underpin or affect addiction on another in polysubstance users. However, there is no tool that has been shown to have psychometric validation for assessment of the severity of khat addiction in polysubstance users. Methods Polysubstance users with khat chewing habit (n = 178, age = 25.8 ± 3.6, BMI = 23.3 ± 2.8 kg/m2) were recruited from randomly selected houses for a cross-sectional study in Mizan, Ethiopia. The survey including severity of dependence scale for khat (SDS-khat), a brief metacognition questionnaire, and a semi-structured socio-demographics tool were administered by trained interviewers. Results There was no ceiling effect or floor effect in the SDS-Khat scores. Internal consistency was moderate (Cronbach’s alpha = 0.58). Internal homogeneity was adequate (Item-total correlations of the SDS-Khat; r ≥ 0.55). Significant negative correlations between the SDS-Khat and the metacognition (r = −.19 to −.34, p < 0.05 or p < 0.01) indicated convergent validity. The findings of exploratory factor analysis were non-unanimous with a suggestion of two models, i.e., a 2-factor and a 1-factor model, while the confirmatory factor analysis favored 1-Factor model. Conclusion The SDS-Khat has adequate psychometric validity for the assessment of psychological severity of khat addiction in the polysubstance users.

【 授权许可】

Unknown