An Examination of Outcome Measures for Pain and Dysfunction in the Cervical Spine

Pickering, Phillip; Osmotherly, Peter G.; Attia, John; McElduff, Patrick

doi:10.1097/brs.0b013e3181d762da

Cited by 42 publications

(28 citation statements)

References 31 publications

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“…Some studies found a one-factor structure [12, 15, 21–23, 27, 34, 64, 72], and others found a two-factor structure [11, 14, 20, 26, 29, 60]. A two-factor structure was found in the present study, explaining 66.71% of the variance.…”

Section: Discussionsupporting

confidence: 66%

Urdu version of the neck disability index: a reliability and validity study

Farooq

Mohseni-Bandpei

Gilani

et al. 2017

BMC Musculoskelet Disord

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BackgroundDespite the wide use of the neck disability index (NDI) for assessing disability in patients with neck pain, the NDI has not yet been translated and validated in Urdu. The first purpose of the present study was to translate and cross-culturally adapt the NDI into the Urdu language (NDI-U). The second purpose was to investigate the reliability, validity and responsiveness of the NDI-U in Urdu-speaking patients experiencing chronic mechanical neck pain (CMNP).MethodsTranslation and cross-cultural adaptation of the original version of the NDI were carried out using previously described procedures. Seventy-six patients with CMNP and thirty healthy participants were recruited for the study. NDI-U and visual analogue scales for pain intensity (VASpain) and disability (VASdisability) were administered to all the participants at baseline and to the patients 3 weeks after receiving physiotherapy intervention. The global rating of change scale (GROC) was also administered at this time. Test-retest reliability and internal consistency were carried out on forty-six randomly selected patients two days after they completed the NDI-U. The NDI-U was evaluated for factor analysis, content validity, construct validity (discriminative and convergent validity) and responsiveness.ResultsAn intra-class correlation coefficient (ICC2,1) revealed excellent test-retest reliability for all items (ICC2,1 = 0.86–0.98) and total scores (ICC2,1 = 0.99) of the NDI-U. The NDI-U was found internally consistent with a Cronbach’s alpha of 0.90 and a fair to good correlation between single items and the NDI-U total scores (r = 0.34 to 0.89). Factor analysis of the NDI-U produced two factors explaining 66.71% of the variance. Content validity was good, as no floor or ceiling effects were detected for the NDI-U total score. To determine discriminative validity, an independent t-test revealed a significant difference in the NDI-U total scores between the patients and healthy controls (P < 0.001). For convergent validity, Pearson’s correlation coefficient showed a strong correlation between NDI-U and VASdisability (r = 0.83, P < 0.001) and a moderate correlation between NDI-U and VASpain (r = 0.62, P < 0.001). To measure responsiveness, an independent t-test showed a significant difference in the NDI-U change scores between the stable and the improved groups (P < 0.001). Furthermore, moderate correlations were found between the NDI-U change scores and the GROC (r = 0.50, P < 0.001), VASdisability change scores (r = 0.58, P < 0.001) and VASpain change scores (r = 0.55, P < 0.001).ConclusionThe results showed that the NDI-U is a reliable, valid and responsive questionnaire to measure disability in Urdu-speaking patients with CMNP.Electronic supplementary materialThe online version of this article (doi:10.1186/s12891-017-1469-5) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 66%

Urdu version of the neck disability index: a reliability and validity study

Farooq

Mohseni-Bandpei

Gilani

et al. 2017

BMC Musculoskelet Disord

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“…1 The article makes an important contribution to the recent debate on the factor structure of the neck disability index (NDI). Any patient-reported outcome measure should report its factor structure.…”

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confidence: 99%

“…4 Consequently, we believe the statement that "Factor analysis revealed a single factor for the NDI" within the "Results" section of the publication by Pickering et al 1 may be fl awed as PCA was used instead of maximum likelihood extraction. 1 The PCA method is often employed as it follows the precedent of other researchers 3 rather than being selected for its statistical properties. 4 Without correct analysis, the fi nding of a single factor structure by Pickering et al may be different.…”

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confidence: 99%

Factor Structure of the Neck Disability Index

Gabel

Melloh

Cuesta‐Vargas

2011

Spine

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“…The CNFDS is a self-assessment questionnaire, which makes its application easier as it can be executed directly by the patient, a fact which brings some features and advantages, as it lessens the chance of misinterpretation by the evaluator; is easily accessible; does not contain specific technical terminology, enabling a greater understanding by the patient responding to it and it can be completed without the presence and lead of a researcher but not to Brazilian Portuguese. As it is a frequently used tool for selfassessment of cervical disability, [24][25][26] with excellent practicality and reliability (demonstrated during validation) 3 , it was chosen for this study. Thus, the translation and adaptation of the CNFDS to Brazilian Portuguese brings the possibility of a further tool for assessing the effect and impact that cervical dysfunction can have on a patient's life.…”

Section: Considering These Aspects the Copenhagenmentioning

confidence: 99%

“…18 To measure the impact that cervical pain can have on an individual as well as the limitations generated by it, several questionnaires and evaluation scales have been developed, often in the English language 19 , such as the Neck Disability Index (NDI) 20 , the Neck Pain and Disability Scale (NPDS) 21 , the Cervical Spine Outcomes Questionnaire (CSOQ) 22 and the North wick Park Neck Pain Questionnaire (NPK) 23 . Scales and self-assessment questionnaires, besides their scientific importance, can guide clinical practice 3,[24][25][26] . Despite the recognized practicality and usefulness of these questionnaires, the procedures related to their creation and development have only recently been standardized with the development of the Scientific Advisory Committee of Medical Out comes Trust 27 whose main purpose is to select standardized criteria for the development of quality of life self-assessment protocols and adjustments/adaptations in languages other than the original.…”

Section: Introductionmentioning

confidence: 99%

The Copenhagen Neck Functional Disability Scale – Cnfds: Translation and Cultural Adaptation to Brazilian Portuguese

Araújo

Behlau

2014

J. Hum. Growth Dev.

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Introduction: the Danish questionnaire entitled The Copenhagen Neck Functional Disability Scale(CNFDS) is a tool for self-assessment of cervical complaints,originally developed in English, of which there is, so far, no translation into Brazilian Portuguese. The process involvedin this researchproved to be relevant for the exploration of the questionnaire and the realization of adjustments necessary for it to be functiona l and applicable in Portuguese Language and Brazilian Culture settings. Thus, once this has been carried out, many health professionals will benefit from this version in their clinical practice. Objective: To perform the translation and cultural adaptation to Brazilian Portuguese of the Escala funcional de incapacidade do pescoço de Copenhagen (The Copenhagen Neck Functional Disability Scale -CNFDS). Methods: The questionnaire was translated into Brazilian Portuguese by two bilingual, Brazilian physiotherapists who were aware of the objective of this research. The back-translation was performed by a third person, a Brazilian, bilingual English teacher, who had not participated in the previous step. After comparing the resulting translations, a single translated version was produced named the Escala Funcional de Incapacidade do Pescoço de

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An Examination of Outcome Measures for Pain and Dysfunction in the Cervical Spine

Cited by 42 publications

References 31 publications

Urdu version of the neck disability index: a reliability and validity study

Urdu version of the neck disability index: a reliability and validity study

Factor Structure of the Neck Disability Index

The Copenhagen Neck Functional Disability Scale – Cnfds: Translation and Cultural Adaptation to Brazilian Portuguese

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