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The Grocery Purchase Quality Index-2016 Performs Similarly to the Healthy Eating Index-2015 in a National Survey of Household Food Purchases.
J Acad Nutr Diet. 2019 01; 119(1):45-56.JA

Abstract

BACKGROUND

Household food purchases are potential indicators of the quality of the home food environment, and grocery purchase behavior is a main focus of US Department of Agriculture (USDA) nutrition education programs; therefore, objective measures of grocery purchases are needed.

OBJECTIVE

The objective of the study was to evaluate the Grocery Purchase Quality Index-2016 (GPQI-2016) as a tool for assessing grocery food purchase quality by using the Healthy Eating Index-2015 (HEI-2015) as the reference standard.

DESIGN

In 2012, the USDA Economic Research Service conducted the National Household Food Acquisition and Purchase Survey. Members of participating households recorded all foods acquired for a week. Foods purchased at stores were mapped to the 29 food categories used in USDA Food Plans, expenditure shares were estimated, and GPQI-2016 scores were calculated. USDA food codes, provided in the survey database, were used to calculate the HEI-2015.

PARTICIPANTS/SETTING

All households in the 48 coterminous states were eligible for the survey. The analytic sample size was 4,276 households.

MAIN OUTCOME MEASURES

GPQI-2016 and HEI-2015 scores were compared.

STATISTICAL ANALYSES PERFORMED

Correlation of scores was assessed using Spearman's correlation coefficient. Linear regression models with fixed effects were used to determine differences among various subgroups of households.

RESULTS

The correlation coefficient for the total GPQI-2016 score and the total HEI-2015 score was 0.70. For the component scores, the strongest correlations were for Total and Whole Fruit (0.89 to 0.90); the weakest were for Dairy (0.67), Refined Grains (0.66), and Sweets and Sodas/Added Sugars (0.65) (all, P<0.01). Both the GPQI-2016 and HEI-2015 were significantly different among subgroups in expected directions.

CONCLUSIONS

Overall, the GPQI-2016, estimated from a national survey of households, performed similarly to the HEI-2015. The tool has potential for evaluating nutrition education programs and retail-oriented interventions when the nutrient content and gram weights of foods purchased are not available.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

30413342

Citation

Brewster, Philip J., et al. "The Grocery Purchase Quality Index-2016 Performs Similarly to the Healthy Eating Index-2015 in a National Survey of Household Food Purchases." Journal of the Academy of Nutrition and Dietetics, vol. 119, no. 1, 2019, pp. 45-56.
Brewster PJ, Durward CM, Hurdle JF, et al. The Grocery Purchase Quality Index-2016 Performs Similarly to the Healthy Eating Index-2015 in a National Survey of Household Food Purchases. J Acad Nutr Diet. 2019;119(1):45-56.
Brewster, P. J., Durward, C. M., Hurdle, J. F., Stoddard, G. J., & Guenther, P. M. (2019). The Grocery Purchase Quality Index-2016 Performs Similarly to the Healthy Eating Index-2015 in a National Survey of Household Food Purchases. Journal of the Academy of Nutrition and Dietetics, 119(1), 45-56. https://doi.org/10.1016/j.jand.2018.08.165
Brewster PJ, et al. The Grocery Purchase Quality Index-2016 Performs Similarly to the Healthy Eating Index-2015 in a National Survey of Household Food Purchases. J Acad Nutr Diet. 2019;119(1):45-56. PubMed PMID: 30413342.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Grocery Purchase Quality Index-2016 Performs Similarly to the Healthy Eating Index-2015 in a National Survey of Household Food Purchases. AU - Brewster,Philip J, AU - Durward,Carrie M, AU - Hurdle,John F, AU - Stoddard,Gregory J, AU - Guenther,Patricia M, Y1 - 2018/11/07/ PY - 2018/05/28/received PY - 2018/08/28/revised PY - 2018/08/29/accepted PY - 2018/11/11/pubmed PY - 2019/11/27/medline PY - 2018/11/11/entrez KW - Evaluation KW - Grocery purchase KW - Grocery quality KW - Grocery shopping KW - Healthy Eating Index (HEI) SP - 45 EP - 56 JF - Journal of the Academy of Nutrition and Dietetics JO - J Acad Nutr Diet VL - 119 IS - 1 N2 - BACKGROUND: Household food purchases are potential indicators of the quality of the home food environment, and grocery purchase behavior is a main focus of US Department of Agriculture (USDA) nutrition education programs; therefore, objective measures of grocery purchases are needed. OBJECTIVE: The objective of the study was to evaluate the Grocery Purchase Quality Index-2016 (GPQI-2016) as a tool for assessing grocery food purchase quality by using the Healthy Eating Index-2015 (HEI-2015) as the reference standard. DESIGN: In 2012, the USDA Economic Research Service conducted the National Household Food Acquisition and Purchase Survey. Members of participating households recorded all foods acquired for a week. Foods purchased at stores were mapped to the 29 food categories used in USDA Food Plans, expenditure shares were estimated, and GPQI-2016 scores were calculated. USDA food codes, provided in the survey database, were used to calculate the HEI-2015. PARTICIPANTS/SETTING: All households in the 48 coterminous states were eligible for the survey. The analytic sample size was 4,276 households. MAIN OUTCOME MEASURES: GPQI-2016 and HEI-2015 scores were compared. STATISTICAL ANALYSES PERFORMED: Correlation of scores was assessed using Spearman's correlation coefficient. Linear regression models with fixed effects were used to determine differences among various subgroups of households. RESULTS: The correlation coefficient for the total GPQI-2016 score and the total HEI-2015 score was 0.70. For the component scores, the strongest correlations were for Total and Whole Fruit (0.89 to 0.90); the weakest were for Dairy (0.67), Refined Grains (0.66), and Sweets and Sodas/Added Sugars (0.65) (all, P<0.01). Both the GPQI-2016 and HEI-2015 were significantly different among subgroups in expected directions. CONCLUSIONS: Overall, the GPQI-2016, estimated from a national survey of households, performed similarly to the HEI-2015. The tool has potential for evaluating nutrition education programs and retail-oriented interventions when the nutrient content and gram weights of foods purchased are not available. SN - 2212-2672 UR - https://www.unboundmedicine.com/medline/citation/30413342/The_Grocery_Purchase_Quality_Index_2016_Performs_Similarly_to_the_Healthy_Eating_Index_2015_in_a_National_Survey_of_Household_Food_Purchases_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S2212-2672(18)30848-7 DB - PRIME DP - Unbound Medicine ER -