A measure of outcome expectations for fruit and vegetable consumption among fourth and fifth grade children: reliability and validity |
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Authors: | Domel, S.B. Baranowski, T. Davis, H.C. Thompson, W.O. Leonard, S.B. Baranowski, J. |
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Affiliation: | Georgia Prevention Institute, Department of Pediatrics, Medical College of Georgia Augusta, GA 30912-3710 1Division of Behavioral Sciences and Health Education, School of Public Health, Emory University Atlanta, GA 30329 2Office of Biostatistics, Medical College of Georgia Augusta, GA 30912-4900 3Georgia Institute of Human Nutrition, Department of Medicine, Medical College of Georgia Augusta, GA 30912-3102 4Office of Public Health Practice, School of Public Health, Emory University Atlanta, GA 30329, USA |
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Abstract: | An outcome expectations questionnaire for fruit and vegetable(F&V) consumption among fourth and fifth grade studentswas developed, pilot-tested at one school and field-tested attwo schools. Seventeen questions generated from focus groupswere listed for fruits and repeated for vegetables. Principalcomponents analysis indicated two subscales socialand health and physical ability accounting for37.3% of the total variance; items loaded on the same subscaleswhen applied to fruits or vegetables. Internal consistenciesand test-retest reliabilities for the subscales were acceptable.Mean scores for the health and physical abilitysubscale were almost twice as large as the socialsubscale regardless of gender, grade and ethnicity. Pearsoncorrelations between F&V outcome expectation subscales andconsumption of F&V (from daily food records) were low, similarto patterns of correlations with preferences for F&V. Furtherresearch regarding outcome expectations is needed to clarifythe extent of their impact on F&V consumption specifically,and perhaps on consumption in general, among pre-adolescentchildren. |
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