Cross-Cultural Adaptation and Evaluation of Psychometric Properties of Persian Version of Supports Intensity Scale among Adults with Intellectual and Developmental Disabilities

Authors

  • Sajed Salehi Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
  • Sheyda Javadipour Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
  • Gholamhossein Nassadj Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
  • Mohammad Hossein Haghighi Department of Statistics, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
  • Shiva Saboor Clinical Psychology Department at Azad University of Sari, Khouzestan Association for Autism, Ahvaz
  • Kamal Shakhi Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz

DOI:

https://doi.org/10.5463/dcid.v29i2.727

Keywords:

Intellectual and developmental disability, SIS-A, Barthel

Abstract

Purpose: This study was designed to translate and assess the psychometric properties of Supports Intensity Scale among adults with intellectual and developmental disability in Ahvaz and Tehran, Iran.

Method: The cross-sectional study was carried out in two stages. The first stage consisted of the forward-backward translation of Supports Intensity Scale - Adult Version) SIS-A(. In the second stage, 197 people with intellectual and developmental disabilities were recruited in order to assess the internal consistency and test-retest reliability, concurrent and content validity of SIS-A. The confirmatory factor analysis (CFA) was performed to approve the seven-factor model of the instrument.

Results: The intra-class correlation coefficient values varied between 0.85 and 0.99 (very good to excellent). All subscales of the SIS-A showed Cronbach’s alpha above 0.70. Correlation coefficient between SIS-A and Barthel index was about -0.65, which shows excellent concurrent validity of SIS-A. The findings showed SIS-A had high ability to discriminate between groups with different IQ (p<0.05). There was no significant correlation between SIS-A and the age of participants (p>0.05). The result of CFA confirmed that the seven-factor model of SIS-A is the fittest pattern for SIS-A.

Conclusion: The results indicated that the Persian version of SIS-A is a valid and reliable instrument to assess function and disability among people with intellectual and developmental disability.

Author Biographies

Sajed Salehi, Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz

The author is affiliated to the Musculoskeletal  Rehabilitation  Research Center. Ahvaz, Iran. He has been working as Speech and language pathologist in the cith of Ahvaz in the Imam Hospital. He also worked with Dr. Ghllamhoussein Nasadje on prevalence of overweight and obesity of Children with intellectual and developmental disabilities in the Khouzestan Province.

Sheyda Javadipour, Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz

The author is affiliated to the Musculoskeletal  Rehabilitation  Research Center. Ahvaz, Iran. Mrs. Javadipour is an occupational therapist in the rehabilitation school of the city of Ahvaz as Mentor. She is also the head of Occupational department in the school, and she has been working with the children with intellectual and developmental disabilities.

Gholamhossein Nassadj, Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz

The author is affiliated to the Musculoskeletal  Rehabilitation  Research Center. Ahvaz, Iran. He is a physiotherapist in the rehabilitation school of ahvaz, and also the head of the department of rehabilitation Administration. His interested area for work is assessing the psychometric features of scales. also, he is so interested in increasing the participation of patients with knee injuries.

Mohammad Hossein Haghighi, Department of Statistics, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz

 The author works at the Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Department of  Statistics, School of Public Health, Ahvaz in Iran. He is the head of the Department of  Statistics, and also he is works in Imam and Golestan hospitals as an statistician. in addition, he did a research on obesity in children with intellectual and developmental disabilities.

Shiva Saboor, Clinical Psychology Department at Azad University of Sari, Khouzestan Association for Autism, Ahvaz

The author is associated with Clinical Psychology Department at Azad University of Sari, Mazandaran. Khouzestan Association for Autism, Ahvaz, Iran. Her interested area is Applied Behavior Analysis, and She is also interested in outcome measures area. She has been working as head of Khouzestan Association of Autism for 2 years.

Kamal Shakhi, Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz

The author is affiliated to the. Musculoskeletal  Rehabilitation  Research Center. Ahvaz, Iran. He has been working in Welfare Organization of Khouzestan as CBR worker. his interested area is outcome measures, Employment in the people with disabilities, and also children with autism. he has participated in many research with Dr. Salehi and Dr. Faraji in the city of Ahvaz.

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Published

2018-10-02

How to Cite

1.
Salehi S, Javadipour S, Nassadj G, Haghighi MH, Saboor S, Shakhi K. Cross-Cultural Adaptation and Evaluation of Psychometric Properties of Persian Version of Supports Intensity Scale among Adults with Intellectual and Developmental Disabilities. DCIDJ [Internet]. 2018 Oct. 2 [cited 2024 Sep. 8];29(2):76-93. Available from: https://dcidj.uog.edu.et/index.php/up-j-dcbrid/article/view/297

Issue

Vol. 29 No. 2 (2018): Summer 2018

Section

Original Research Articles

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