Replicability of the Questionnaire Assessing the Addition of IN NATURA Vegetable Oil to the Child’s Diet

Abstract

Objective: To verify the replicability of the questionnaire Assessing the Addition of IN NATURA Vegetable Oil to the Child’s Diet”. Study design: observational cross-sectional study. Place and Duration of Study: The study was carried out in two pediatric outpatient clinics, one of which refers to a health plan operator (SJM), municipality of São João de Meriti (RJ) and the other, at the Polyclinic Piquet Carneiro of the University from the State of Rio de Janeiro (PPC/UERJ), municipality of Rio de Janeiro (RJ), from March 2017 to January 2019. Sample: Responsible for children feeding, that is, those who buy the food prepare it or serve meals. SJM, n=150 and PPC/UERJ; n=150. Methodology: Doornik-Hansen test verified the Multivariate normality of the scores distribution of the items according to Likert scale. Kaiser-Meyer-Olkin was used as a criterion for identify the adequately of sample for the data adjustment. Conbrach's alpha indicated the internal consistency (coherence) between items on each dimension. The reproducibility by reliability was tested by test-retest by using the weighted Kappa coefficient. Results: Multivariate normality of the SJM scores: (chi2 (22)=602.969 Prob chi2=.0000) and PPC/UERJ: (chi2(22)=411.666 Prob chi2=.0000), adequacy of the samples, KMO: SJM=0.78 to 0.92 and PPC/UERJ=0.76 to 0.92, internal consistency of dimensions (Dimension 1 and 2) by Cronbach's alpha greater than 0.75 for SJM and PPC/UERJ, reproducibility of the questionnaire by weighted Kappa: 0.90 (p value.008), t test for two independent samples, SJM and PPC/UERJ: significant difference for Dimension 1, but not for Dimension 2.