Psychometric Properties of Persian Version of the Ottawa Self-Injury Inventory in Hospitalized Patients

Valiollah Akbari; Mostafa  Vahedian; Parvin  Rahmatinejad

doi:10.18502/ssu.v31i6.13477

Valiollah Akbari Department of Psychiatry, Qom University of Medical Sciences, Qom, Iran.
Mostafa Vahedian Department of Statistics and Epidemiology, Qom University of Medical Sciences, Qom, Iran.
Parvin Rahmatinejad Nekoei-Hedayati Hospital, Qom University of Medical Sciences, Qom, Iran.

DOI: https://doi.org/10.18502/ssu.v31i6.13477

Keywords: Non-suicidal self-injury, Ottawa self-injury inventory, Psychometric properties, Iranian population.

Abstract

Introduction: Non-Suicidal Self-Injury (NSSI) has high prevalence among the patients with psychiatric disorders. Self-Injury plays an important role in the treatment, prognosis and risk of suicide, which highlights the need for an appropriate tool to assess the nature and psychological functions of NSSI. Therefore, the aim of this study was to determine the psychometric properties of the Persian version of the Ottawa Self-Injury inventory (OSI) in hospitalized patients.

Methods: The present study was a psychometric study based on analytical method. The research has been performed on 310 patients with non-suicidal self-injury who have been referred to Nekoei-Hedayati Hospital in Qom City. Sample group completed Persian version of the Ottawa Self-Injury inventory. Data were analyzed using SPSS-16 and Cronbach’s alpha coefficient, Content Validity Index (CVI) and Content Validity Ratio (CVR).

Results: The results showed that content validity index in this study was more than 0.75 and content validity ratio for validity of questions was more than 0.79. The impact score of all items (Except for the tenth question) was higher than 1.5 that confirmed the face validity of inventory. The total Cronbach's alpha coefficient was calculated 0.71. Another result of this study was that 52% of patients reported at least one addictive characteristic.

Conclusion: The finding showed that Persian version of Ottawa Self-Injury inventory has appropriate validity (face /content) and reliability in the inpatient population