Development of a tool to assess psychosocial indicators of fruit and vegetable intake for 2 federal programs

Marilyn S. Townsend, Lucia L. Kaiser

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Objective: Development of an evaluation tool of psychosocial constructs for use by participants in 2 federal programs, Food Stamp Nutrition Education and the Expanded Food and Nutrition Education Program. Design: Cross-sectional data from a longitudinal study. Participants: Limited-resource women (n = 111) living in low-income communities. Measures: Test-retest reliability, internal consistency, ethnic differences, convergent validity. Analysis: Spearman rank order correlation, analysis of variance, principal components analysis. Results: Reliability coefficients ranged from a low of r = .18 (not significant) to r = .74 (P < .0001). Two items were deleted for not meeting criteria for reliability and 2 for redundancy. Ethnic differences at baseline were significant for 1 item. Domain constructs loaded on 4 to 5 factors for the biopsychosocial framework. Estimates of convergent validity of 9 constructs led to the deletion of 3 (ie, perceived barriers, social support, and perceived norms), with retention of perceived benefits, perceived control, self-efficacy, readiness to eat more fruit, readiness to eat more vegetables, and perceived diet quality. As an estimate of convergent validity, the final version of the tool with 6 constructs remaining showed significant correlations with indicators of diet quality: serum carotenoid values (r = .38, P < .001); hypothesized nutrients calculated from the mean of 3 24-hour dietary recalls (vitamin C, r = .47, P < .0001; vitamin A, r = .39, P < .0001; folate, r = .37, P < .0001; beta-carotene, r = .31, P < .001; and fiber, r= .46, P < .0001); fruit and vegetable servings (r = 0.55, P < .0001); Healthy Eating Index (r = .27. P < .05); and a fruit and vegetable behavioral scale (r = .60, P < .0001). Conclusion and Implications: This systematic process yielded a fruit and vegetable evaluation tool useful for practitioners and researchers. This is the first validation study of this type to estimate convergent validity with 5 indicators of diet quality, including a biomarker.

Original languageEnglish (US)
Pages (from-to)170-184
Number of pages15
JournalJournal of Nutrition Education and Behavior
Volume37
Issue number4
StatePublished - Jul 2005

Fingerprint

governmental programs and projects
vegetable consumption
fruit consumption
vegetables
Vegetables
Fruit
nutritional adequacy
ethnic differences
nutrition education
fruits
Diet
Reproducibility of Results
Expanded Food and Nutrition Education Program
Food Assistance
Supplemental Nutrition Assistance Program
food
self-efficacy
Education
Food
diet recall

Keywords

  • Evaluation
  • Expanded Food and Nutrition Education Program (EFNEP)
  • Food Stamp Nutrition Education (FSNE)
  • Fruits
  • Health beliefs
  • Healthy Eating Index
  • Low income
  • Vegetables

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Education
  • Food Science

Cite this

Development of a tool to assess psychosocial indicators of fruit and vegetable intake for 2 federal programs. / Townsend, Marilyn S.; Kaiser, Lucia L.

In: Journal of Nutrition Education and Behavior, Vol. 37, No. 4, 07.2005, p. 170-184.

Research output: Contribution to journalArticle

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