Assessing factorial and convergent validity and reliability of a food behaviour checklist for Spanish-speaking participants in US Department of Agriculture nutrition education programmes

摘要

ObjectiveTo assess convergent validity, factorial validity, testa€“retest reliability and internal consistency of a diet quality food behaviour checklist (FBC) for low-literate, low-income Spanish speakers.DesignParticipants (n 90) completed three dietary recalls, the Spanish-language version of the US Department of Agriculture (USDA) Household Food Security Survey Module (HFSSM) and the Spanish-language FBC. Factor structure was examined using principal component analysis. Spearman correlation coefficients between FBC item responses and nutrient intakes from 24 h recalls were used to estimate convergent validity. Correlation coefficients were also calculated between FBC item responses at two time points in another group of participants (n 71) to examine testa€“retest reliability. Cronbach's ?± coefficient was determined for items within each sub-scale.SettingNon-profit community agencies serving low-income clients, migrant farm worker camps and low-income housing sites in four California counties.SubjectsSpanish-speaking women (n 161) who met income eligibility for the SNAP-Ed (Supplemental Nutrition Assistance Programa€“Education).ResultsFactor analysis resulted in six sub-scales. Responses to nineteen food behaviour items were significantly correlated with hypothesized 24 h recall data (with a maximum correlation of 0?·44 for drinking milk and calcium) or the USDA HFSSM (0?·42 with the food security item). Coefficients for testa€“retest reliability ranged from 0?·35 to 0?·79. Cronbach's ?± ranged from 0?·49 for the diet quality sub-scale to 0?·80 for the fruit and vegetable sub-scale.ConclusionsThe twenty-two-item FBC and instruction guide will be used to evaluate USDA community nutrition education interventions with low-literate Spanish speakers. This research contributes to the body of knowledge about this at-risk population in California.