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ORIGINAL ARTICLE
Year : 2021  |  Volume : 15  |  Issue : 2  |  Page : 58-62

Translation of shoulder pain and disability index in Gujarati language and analysis of its psychometric properties in persons with shoulder pain


Department of Orthopedic, SBB College of Physiotherapy, V.S. General Hospital Campus, Ahmedabad, Gujarat, India

Correspondence Address:
Dr. Vidhi Paras Bhatt
8/B Veenakunj Society, Near Vastrapur Railway Crossing, Opposite R.R. Dwivedi High School, Vejalpur, Ahmedabad - 380 051, Gujarat
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/pjiap.pjiap_9_21

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BACKGROUND: Shoulder pain and disability index (SPADI) is a joint specific tool that helps to estimate the pain and disability in persons with shoulder pain. It is a self-administered index consisting of 13 items divided into two subscales: pain and disability. The study aims to find inter- and intra-rater reliability and concurrent validity of Gujarati version of SPADI (SPADI-G) in persons with shoulder pain in Gujarati population. SPADI-G can prove to be helpful in objectively defining the pain and disability in persons with shoulder pain. MATERIALS AND METHODS: A prior permission was taken from original author for translation of SPADI into Gujarati language. The translation procedure was carried out according to the guidelines provided by the WHO with forward and backward translation. The psychometric properties were analyzed in 20 persons (mean age of 52.65 ± 7.76) with different shoulder pathologies. Informed oral consent was taken from persons before the study. The validity was obtained by correlating SPADI-G and visual analog scale (VAS). The intrarater reliability was established by test–retest method within a span of 2 days. The questionnaire was again administered after 1 week by two different investigators to test the interrater reliability. RESULTS: The concurrent validity was established with a positive correlation with moderate strength between SPADI-G and VAS (Pearson's coefficient of correlation: r = 0.587, P < 0.01). The intrarater reliability was found between 0.853 and 0.977 (intraclass correlation coefficient [ICC] = 0.943) and interrater reliability was found between 0.914 and 0.983 (ICC = 0. 959). There was a high internal consistency with Cronbach's alpha = 0.967. The Bland–Altman plot analysis was performed for SPADI-G scores in between the two raters, which showed agreement between the two scores within the limits of agreement with 95% confidence interval. The linear regression showed no proportional bias. CONCLUSION: The results show good validity with moderate correlation between VAS and SPADI-G and excellent inter- and intra-rater reliability for SPADI-G in persons with shoulder pain.


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