Development of a valid Simplified Chinese version of the International Hip Outcome Tool (SC-iHOT-33) in young patients having total hip arthroplasty.
The International Hip Outcome Tool (iHOT-33) is a questionnaire designed for young, active patients with hip disorders. It has proven to be a highly reliable and valid questionnaire. The main purpose of our study was to adapt the iHOT-33 questionnaire into simplified Chinese and to assess its psychometric properties in Chinese patients.



The iHOT-33 was cross culturally adapted into Chinese and 138 patients completed the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), the EuroQol-5D (EQ-5D), and the Chinese version of the iHOT-33(SC-iHOT-33) pre- or postoperatively within 6 months' follow-up. The Cronbach's alpha, intraclass correlation coefficient (ICC), Pearson's correlation coefficient (r), effect size (ES), and standardized response mean (SRM) were calculated to assess the reliability, validity, and responsiveness of the SC-iHOT-33, respectively.



Total Cronbach's alpha was 0.965, which represented excellent internal consistency of the SC-iHOT-33. The ICC ranges from 0.866 to 0.929, which shows excellent test-retest reliability. The subscales of SC-iHOT-33 had the highest correlation coefficient (r = 0.812) with the physical function subscales of the WOMAC, as well as good correlation between the social/emotional subscale of the SC-iHOT-33 and the EQ-5D (r = 0.740, r = 0.743). No floor or ceiling effects were found. The ES and SRM values indicated good responsiveness of 2.44 and 2.67, respectively.



The SC-iHOT-33 questionnaire is reliable, valid, and responsive for the evaluation of young, Chinese, active patients with hip disorders.
Department of Orthopedics, The Eighty-eighth Military Hospital, Hushan Road 6, Tai'an, 271000, China. Electronic address: bzmcldh@163.com.
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Li
Department of Orthopedics, Chengdu Military General Hospital, Tianhui Road 270, Chengdu, 610000, China.
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Wang
Department of Sports, Tai Shan University, Dongyue Road 525, Tai'an, 271000, China.
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Li
Department of Orthopedics, The Eighty-eighth Military Hospital, Hushan Road 6, Tai'an, 271000, China.
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Gao
Department of Orthopedics, Changhai Hospital Affiliated to the Second Military Medical University, Changhai Road 168, Shanghai, 200433, China.
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Liu
Department of Orthopedics, Changhai Hospital Affiliated to the Second Military Medical University, Changhai Road 168, Shanghai, 200433, China.
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Liu
Department of Orthopedics, Changhai Hospital Affiliated to the Second Military Medical University, Changhai Road 168, Shanghai, 200433, China. Electronic address: shanghaildh@hotmail.com.
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Xu
D000293:Adolescent; D000328:Adult; D019644:Arthroplasty, Replacement, Hip; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014175:Translating; D016896:Treatment Outcome; D055815:Young Adult
Hip disorders; Simplified Chinese version; iHOT-33