Cultural Adaption, Validation and Factor Analysis of the Persian Version of the Non-Nutritive Sucking Scoring System

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Tozihi Amirsalar; Ghelichi Leila; Bordbar Arash; Tarameshlu Maryam

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Journal Paper

Paper Information

Journal: Journal of Iranian Medical Council Year:621 | Volume: | Issue: Page(s): 107-115

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Title

Cultural Adaption, Validation and Factor Analysis of the Persian Version of the Non-Nutritive Sucking Scoring System

Author(s)

Tozihi Amirsalar | Ghelichi Leila | Bordbar Arash | Tarameshlu Maryam | Issue Writer Certificate

Keywords

Cross-Sectional StudiesQ4

Factor AnalysisQ4

InfantQ4

NewbornQ4

Persian peopleQ4

PrematureQ4

PsychometricsQ4

Reproducibility of resultsQ4

StatisticalQ4

Abstract

Background: Valid and reliable tools are required to measure non-nutritive sucking and oral feeding readiness of preterm Infants. The aim of this study was to translate the Non-Nutritive Sucking scoring system (NNS) into Persian language and to evaluate its measurement properties. Methods: A cross-sectional study was conducted to translate and cross-culturally adapt the NNS to Persian language (P-NNS) following steps described in guidelines. Eighty-eight preterm Infants participated in this study. Psychometric properties of floor/ceiling effects, internal consistency reliability, inter-rater reliability, Standard Error of Measurement (SEM), Smallest Detectable Change (SDC) and construct validity were tested. Factor Analysis was performed to determine the P-NNS structure. Results: There were no floor or ceiling effects that indicate the content and responsiveness of P-NNS. Internal consistency was high (Cronbach’s α 0. 905). Item–total correlations exceeded acceptable standard of 0. 3 for the all the items (0. 3–0. 9). The inter-rater reliability was excellent (k=0. 91, SE=0. 04,p<0. 001). SEM and SDC were 8. 04 and 22. 28, respectively. Construct validity was supported by a significant correlation between the P-NNS total score and the Persian version of the Early Feeding Skills (EFS) total score (r=0. 94, p<0. 001). Explanatory Factor Analysis revealed 2 components for p-NNS. Conclusion: The P-NNS was cross-culturally adapted to Persian and demonstrated to be a reliable and valid instrument to measure non-nutritive sucking and oral feeding readiness of preterm Infants.

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