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Cross-cultural Adaptation, Reliability, Validity, and Responsiveness of the Simplified-Chinese Version of Neck Disability Index.
Spine (Phila Pa 1976). 2020 Apr 15; 45(8):541-548.S

Abstract

STUDY DESIGN

Cross-cultural adaptation and psychometric evaluation.

OBJECTIVE

The aim of this study was to translate the Neck Disability Index (NDI) into the simplified-Chinese language and to evaluate the reliability, validity, and responsiveness of the new questionnaire.

SUMMARY OF BACKGROUND DATA

Neck pain is a major health problem resulting in major disability. NDI is the most frequently used scale for self-rating of disability due to neck pain. At present, there is no simplified-Chinese version of the NDI. The aims of this study were to culturally adapt and translate the NDI into the simplified-Chinese language (NDI-SC) and to evaluate its psychometric properties in patients with neck pain.

METHODS

The NDI was translated into simplified-Chinese version based on established guidelines. A total of 70 patients participated in this study. Patients were asked to complete a set of questionnaires comprising of their demographic information, the NDI-SC, and a visual analog scale (VAS) of pain. Fifty-six patients returned after 1 to 2 weeks to complete the same set of questionnaires and the global rating of change (GROC) scale. Then, the NDI-SC was evaluated for content validity, construct validity, internal consistency, test-retest reliability, and responsiveness.

RESULTS

The NDI-SC demonstrated excellent internal consistency (Cronbach α = 0.92) and good test-retest reliability (ICC2,1 = 0.85). Content validity was confirmed as no floor or ceiling effects were detected for the NDI-SC total score. Construct validity was established with factor analysis revealing two-factor subscales explaining 66% of the variance. The NDI-SC showed a strong correlation with VAS (Rp = 0.61, P < 0.001) and a moderate correlation with GROC (Rs = 0.46, P < 0.001). The correlation between NDI-SC change scores and VAS change scores was also moderate (Rp = 0.59, P < 0.001).

CONCLUSION

The results showed that the NDI-SC is a reliable, valid, and responsive instrument to measure functional limitations in patients with neck pain.

LEVEL OF EVIDENCE

3.

Authors+Show Affiliations

Department of Allied Health, SingHealth Polyclinics, Singapore.Department of Allied Health, SingHealth Polyclinics, Singapore.Department of Allied Health, SingHealth Polyclinics, Singapore.Department of Allied Health, SingHealth Polyclinics, Singapore.Department of Research, SingHealth Polyclinics, Singapore.Pasir Ris Polyclinic, SingHealth Polyclinics, Singapore.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31770333

Citation

Lim, Hanniel Han Rong, et al. "Cross-cultural Adaptation, Reliability, Validity, and Responsiveness of the Simplified-Chinese Version of Neck Disability Index." Spine, vol. 45, no. 8, 2020, pp. 541-548.
Lim HHR, Tang ZY, Hashim MABM, et al. Cross-cultural Adaptation, Reliability, Validity, and Responsiveness of the Simplified-Chinese Version of Neck Disability Index. Spine (Phila Pa 1976). 2020;45(8):541-548.
Lim, H. H. R., Tang, Z. Y., Hashim, M. A. B. M., Yang, M., Koh, E. Y. L., & Koh, K. H. (2020). Cross-cultural Adaptation, Reliability, Validity, and Responsiveness of the Simplified-Chinese Version of Neck Disability Index. Spine, 45(8), 541-548. https://doi.org/10.1097/BRS.0000000000003325
Lim HHR, et al. Cross-cultural Adaptation, Reliability, Validity, and Responsiveness of the Simplified-Chinese Version of Neck Disability Index. Spine (Phila Pa 1976). 2020 Apr 15;45(8):541-548. PubMed PMID: 31770333.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cross-cultural Adaptation, Reliability, Validity, and Responsiveness of the Simplified-Chinese Version of Neck Disability Index. AU - Lim,Hanniel Han Rong, AU - Tang,Zhi Yin, AU - Hashim,Masayu Afiqah Binte Masagoes, AU - Yang,Mingxing, AU - Koh,Eileen Yi Ling, AU - Koh,Kim Hwee, PY - 2019/11/27/pubmed PY - 2020/8/26/medline PY - 2019/11/27/entrez SP - 541 EP - 548 JF - Spine JO - Spine (Phila Pa 1976) VL - 45 IS - 8 N2 - STUDY DESIGN: Cross-cultural adaptation and psychometric evaluation. OBJECTIVE: The aim of this study was to translate the Neck Disability Index (NDI) into the simplified-Chinese language and to evaluate the reliability, validity, and responsiveness of the new questionnaire. SUMMARY OF BACKGROUND DATA: Neck pain is a major health problem resulting in major disability. NDI is the most frequently used scale for self-rating of disability due to neck pain. At present, there is no simplified-Chinese version of the NDI. The aims of this study were to culturally adapt and translate the NDI into the simplified-Chinese language (NDI-SC) and to evaluate its psychometric properties in patients with neck pain. METHODS: The NDI was translated into simplified-Chinese version based on established guidelines. A total of 70 patients participated in this study. Patients were asked to complete a set of questionnaires comprising of their demographic information, the NDI-SC, and a visual analog scale (VAS) of pain. Fifty-six patients returned after 1 to 2 weeks to complete the same set of questionnaires and the global rating of change (GROC) scale. Then, the NDI-SC was evaluated for content validity, construct validity, internal consistency, test-retest reliability, and responsiveness. RESULTS: The NDI-SC demonstrated excellent internal consistency (Cronbach α = 0.92) and good test-retest reliability (ICC2,1 = 0.85). Content validity was confirmed as no floor or ceiling effects were detected for the NDI-SC total score. Construct validity was established with factor analysis revealing two-factor subscales explaining 66% of the variance. The NDI-SC showed a strong correlation with VAS (Rp = 0.61, P < 0.001) and a moderate correlation with GROC (Rs = 0.46, P < 0.001). The correlation between NDI-SC change scores and VAS change scores was also moderate (Rp = 0.59, P < 0.001). CONCLUSION: The results showed that the NDI-SC is a reliable, valid, and responsive instrument to measure functional limitations in patients with neck pain. LEVEL OF EVIDENCE: 3. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/31770333/Cross_cultural_Adaptation_Reliability_Validity_and_Responsiveness_of_the_Simplified_Chinese_Version_of_Neck_Disability_Index_ L2 - https://doi.org/10.1097/BRS.0000000000003325 DB - PRIME DP - Unbound Medicine ER -