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J Nutr Educ Behav. 2012 Nov-Dec;44(6):597-603. doi: 10.1016/j.jneb.2012.04.017.

Assessing reliability and validity of the GroPromo audit tool for evaluation of grocery store marketing and promotional environments.

Author information

1
Department of Family & Preventive Medicine, University of California, La Jolla, CA 92093-0811, USA. jkerr@ucsd.edu

Abstract

OBJECTIVE:

To evaluate reliability and validity of a new tool for assessing the placement and promotional environment in grocery stores.

METHODS:

Trained observers used the GroPromo instrument in 40 stores to code the placement of 7 products in 9 locations within a store, along with other promotional characteristics. To test construct validity, customers' receipts were coded for percentage of food purchases in each of the categories.

RESULTS:

Of the 22 categories tested, 21 demonstrated moderate to high interrater reliability (intraclass correlation ≥ 0.61). When more unhealthy items were placed in prominent locations, a higher percentage of money was spent on less-healthy items, and a lower percentage of food dollars were spent on fruits and vegetables. The prominence of locations was more important than the number of locations.

CONCLUSIONS AND IMPLICATIONS:

The GroPromo tool can be used to assess promotional practices in stores. Data may help advocates campaign for more healthy food items in key promotional locations.

PMID:
23140564
DOI:
10.1016/j.jneb.2012.04.017
[Indexed for MEDLINE]

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