Abstract
Objective: To develop a reliable food store observational data collection instrument to be used for measuring product availability, pricing, and promotion. Design: Observational data collection. Setting: A total of 120 food stores (26 supermarkets, 34 grocery stores, 54 gas/convenience stores, and 6 mass merchandise stores) in the Chicago metropolitan statistical area. Main Outcome Measures: Inter-rater reliability for product availability, pricing, and promotion measures on a food store observational data collection instrument. Analysis: Cohen's kappa coefficient and proportion of overall agreement for dichotomous variables and intra-class correlation coefficient for continuous variables. Results: Inter-rater reliability, as measured by average kappa coefficient, was 0.84 for food and beverage product availability measures, 0.80 for interior store characteristics, and 0.70 for exterior store characteristics. For continuous measures, average intra-class correlation coefficient was 0.82 for product pricing measures; 0.90 for counts of fresh, frozen, and canned fruit and vegetable options; and 0.85 for counts of advertisements on the store exterior and property. Conclusions and Implications: The vast majority of measures demonstrated substantial or almost perfect agreement. Although some items may require revision, results suggest that the instrument may be used to reliably measure the food store environment.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 540-548 |
| Number of pages | 9 |
| Journal | Journal of Nutrition Education and Behavior |
| Volume | 45 |
| Issue number | 6 |
| DOIs | |
| State | Published - Nov 2013 |
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Keywords
- Food store
- Food supply
- Marketing
- Reliability
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Nutrition and Dietetics
Cite this
Development and reliability testing of a food store observation form. / Rimkus, Leah; Powell, Lisa M.; Zenk, Shannon N.; Han, Euna; Ohri-Vachaspati, Punam; Pugach, Oksana; Barker, Dianne C.; Resnick, Elissa A.; Quinn, Christopher M.; Myllyluoma, Jaana; Chaloupka, Frank J.
In: Journal of Nutrition Education and Behavior, Vol. 45, No. 6, 11.2013, p. 540-548.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Development and reliability testing of a food store observation form
AU - Rimkus, Leah
AU - Powell, Lisa M.
AU - Zenk, Shannon N.
AU - Han, Euna
AU - Ohri-Vachaspati, Punam
AU - Pugach, Oksana
AU - Barker, Dianne C.
AU - Resnick, Elissa A.
AU - Quinn, Christopher M.
AU - Myllyluoma, Jaana
AU - Chaloupka, Frank J.
PY - 2013/11
Y1 - 2013/11
N2 - Objective: To develop a reliable food store observational data collection instrument to be used for measuring product availability, pricing, and promotion. Design: Observational data collection. Setting: A total of 120 food stores (26 supermarkets, 34 grocery stores, 54 gas/convenience stores, and 6 mass merchandise stores) in the Chicago metropolitan statistical area. Main Outcome Measures: Inter-rater reliability for product availability, pricing, and promotion measures on a food store observational data collection instrument. Analysis: Cohen's kappa coefficient and proportion of overall agreement for dichotomous variables and intra-class correlation coefficient for continuous variables. Results: Inter-rater reliability, as measured by average kappa coefficient, was 0.84 for food and beverage product availability measures, 0.80 for interior store characteristics, and 0.70 for exterior store characteristics. For continuous measures, average intra-class correlation coefficient was 0.82 for product pricing measures; 0.90 for counts of fresh, frozen, and canned fruit and vegetable options; and 0.85 for counts of advertisements on the store exterior and property. Conclusions and Implications: The vast majority of measures demonstrated substantial or almost perfect agreement. Although some items may require revision, results suggest that the instrument may be used to reliably measure the food store environment.
AB - Objective: To develop a reliable food store observational data collection instrument to be used for measuring product availability, pricing, and promotion. Design: Observational data collection. Setting: A total of 120 food stores (26 supermarkets, 34 grocery stores, 54 gas/convenience stores, and 6 mass merchandise stores) in the Chicago metropolitan statistical area. Main Outcome Measures: Inter-rater reliability for product availability, pricing, and promotion measures on a food store observational data collection instrument. Analysis: Cohen's kappa coefficient and proportion of overall agreement for dichotomous variables and intra-class correlation coefficient for continuous variables. Results: Inter-rater reliability, as measured by average kappa coefficient, was 0.84 for food and beverage product availability measures, 0.80 for interior store characteristics, and 0.70 for exterior store characteristics. For continuous measures, average intra-class correlation coefficient was 0.82 for product pricing measures; 0.90 for counts of fresh, frozen, and canned fruit and vegetable options; and 0.85 for counts of advertisements on the store exterior and property. Conclusions and Implications: The vast majority of measures demonstrated substantial or almost perfect agreement. Although some items may require revision, results suggest that the instrument may be used to reliably measure the food store environment.
KW - Food store
KW - Food supply
KW - Marketing
KW - Reliability
UR - http://www.scopus.com/inward/record.url?scp=84887143216&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887143216&partnerID=8YFLogxK
U2 - 10.1016/j.jneb.2013.02.005
DO - 10.1016/j.jneb.2013.02.005
M3 - Article
C2 - 23726894
AN - SCOPUS:84887143216
VL - 45
SP - 540
EP - 548
JO - Journal of Nutrition Education and Behavior
JF - Journal of Nutrition Education and Behavior
SN - 1499-4046
IS - 6
ER -