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Abstract

BACKGROUND:

To date the Neck OutcOme Score (NOOS) was not cross-culturally adapted, validated or available in the Arabic language, although it was available in other languages.

OBJECTIVE:

To translate and cross-culturally adapt the Arabic version of the Neck OutcOme Score (NOOS-Ar) and study its psychometric properties.

METHODS:

A sample of 146 subjects with chronic neck pain filled in the NOOS-Ar questionnaire to determine the Cronbach’s alpha ( $\alpha$ ) for internal consistency, test-retest reliability by intraclass correlation coefficients ${}_{(2,1)}$ [ICC ${}_{(2,1)}$ ], inter-item correlation, measurement error by coefficient of variance and minimal detectable change, ceiling and floor effects, convergent construct validity with visual analog scale (VAS) by Spearman’s rank correlation coefficient ( $\rho$ ) and factor analysis to calculate and determine its psychometric properties.

RESULTS:

Excellent internal consistency (Cronbach’s $\alpha>$ 0.9) and test-retest reliability [ICC ${}_{(2,1)}$ $>$ 0.9] were observed in NOOS-Ar. None of the five subscales of the NOOS-Ar showed a floor or ceiling effect. The coefficient of variance was generally high, but the minimal detectable change was within the acceptable range ( $<$ 30%). The ‘everyday activity and pain’ and ‘symptoms’ subscales of the NOOS-Ar, showed a moderate correlation with VAS.

CONCLUSION:

The NOOS-Ar is highly reliable and has a moderate to good degree of convergent construct validity with VAS with no floor or ceiling effects.

Keywords

Patient-rated outcome measures questionnaire psychometric properties neck pain NOOS

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Cross-cultural adaptation,validity,and reliability of the Neck OutcOme Score (NOOS-Ar) among the Saudi Arabian populace

Abstract

BACKGROUND:

OBJECTIVE:

METHODS:

RESULTS:

CONCLUSION:

Keywords

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References