Validity and reliability of the Thai translation of the Neck Dissection Impairment Index Questionnaire

Main Article Content

Rcotjournal

Abstract

Abstract
Background Shoulder dysfunction is one of the most common problem in patients with head
and neck cancer who underwent neck dissection. Due to lack of tools to detect this problem,
shoulder dysfunction in patient who underwent neck dissection are still not recognized. NDII (Neck
Dissection Impairment Index) was developed to evaluate the shoulder problem and was translated
into several language and was used in many studies
Objective To translate NDII into Thai language and to validate the Thai version of Neck Dissection
Impairment Index for head and neck cancer patients who underwent neck dissection
Methods NDII was translated to Thai language using forward-backward technique, and was tested
for validity and reliability in head and neck cancer patients who underwent neck dissection at
outpatient Otolaryngology clinic, Faculty of medicine, Ramathibodi Hospital, Mahidol University
from December 2020 to February 2021. Thirty patients were recruited and included. Construct
validity was assessed using Content validity index (CVI), and convergent validity was assessed using
Pearson’s correlation coefficient with Visual Analog Scale (VAS). Reliability was assessed using
Cronbach’s alpha coefficient with internal consistency, and test-retest reliability was assessed using
Intra-class correlation coefficient (ICC) between first and second administrations of the
questionnaire.
Results The Thai version of NDII was translated and approved by 2 clinicians experienced in
management of patients who underwent neck dissection. The content validity index (CVI) of the
Thai version of Neck Dissection Impairment Index was 1.0. The Thai version of NDII highly inversed
correlated with VAS (Pearson’s correlation coefficient = -0.912). The NDII-TH reliability was using


Cronbach’s alpha coefficient of 0.947 with high internal consistency, and test-retest correlation
was using the Intra-class correlation coefficient (ICC = 0.9-1.0).
Conclusion The Thai version of NDII. The NDII-TH was a valid and reliable instrument for use in
patient who underwent neck dissection.
Keywords: Shoulder dysfunction, Neck dissection impairment index, Questionnaire

Article Details

How to Cite
Rcotjournal. (2022). Validity and reliability of the Thai translation of the Neck Dissection Impairment Index Questionnaire. Thai Journal of Otolaryngology Head and Neck Surgery, 22(1). Retrieved from https://he02.tci-thaijo.org/index.php/rcotJ/article/view/256988
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