Evaluation of Three Short Dietary Instruments to Assess Fruit and Vegetable Intake: The National Cancer Institute's Food Attitudes and Behaviors Survey
| Autor: | Amy L. Yaroch, Frances E. Thompson, Heidi M. Blanck, Uriyoán Colón-Ramos, Abdul R. Shaikh, Janet A. Tooze, Susanne McNutt, Olivia M. Thompson, Linda Nebeling |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male Wilcoxon signed-rank test Intraclass correlation Health Behavior education Validity Diet Surveys Sensitivity and Specificity Article Statistics Nonparametric Surveys and Questionnaires Environmental health Statistical analyses Vegetables Humans Medicine Reliability (statistics) Nutrition and Dietetics Nutrition assessment business.industry Reproducibility of Results General Medicine National Cancer Institute (U.S.) United States Diet Nutrition Assessment Fruit Mental Recall Female Health behavior business Food Science Intake assessment |
| Zdroj: | Journal of the Academy of Nutrition and Dietetics. 112:1570-1577 |
| ISSN: | 2212-2672 |
| DOI: | 10.1016/j.jand.2012.06.002 |
| Popis: | Background Fruit and vegetable (F/V) intake assessment tools that are valid, reliable, brief, and easy to administer and code are vital to the field of public health nutrition. Objective To evaluate three short F/V intake screeners (ie, a 2-item serving tool, a 2-item cup tool, and a 16-item F/V intake screener) among adults using multiple 24-hour dietary recalls (24-hour recalls) as the reference instrument and evaluate test–retest reliability of the screeners across a 2- to 3-week time period. Design Validity and reliability study. Participants/setting Two hundred forty-four adults for the validity study and 335 adults for test–retest reliability. Statistical analyses performed Median values for F/V intakes were calculated for the screeners and 24-hour recalls. The Wilcoxon signed rank test was used to compare screeners with the 24-hour recalls. Deattenuated Pearson correlations were reported for validity and intraclass correlation coefficient used for reliability. Results The estimated median daily servings/cups of F/V for the 2-item serving screener was lower, for the 2-item cup screener was equivalent for men but higher for women, and for the 16-item F/V intake screener were about the same when compared with 24-hour recall values. The deattenuated correlations comparing the 24-hour recalls with the screeners were positive but weak for the 2-item serving screener, and were positive and moderate in strength for the 2-item cup and 16-item F/V intake screeners. The test–retest intraclass correlation coefficients were all positive and fairly strong for all of the screeners. Conclusions Although dietary screeners offer a more cost-effective, less burdensome way to obtain gross estimates to rank individuals with regard to F/V intake, these methods are not recommended for assessing precise intake levels. |
| Databáze: | OpenAIRE |
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