Format

Send to

Choose Destination
J Nutr Educ Behav. 2010 Jan-Feb;42(1):26-32. doi: 10.1016/j.jneb.2009.01.005.

Short-term temporal stability in observed retail food characteristics.

Author information

1
University of Illinois at Chicago, College of Nursing, Department of Health Systems Science, Chicago, IL 60612, USA. szenk@uic.edu

Abstract

OBJECTIVE:

Use of direct observation to characterize neighborhood retail food environments is increasing, but to date most studies have relied on a single observation. If food availability, prices, and quality vary over short time periods, repeated measures may be needed to portray these food characteristics. This study evaluated short-term (2-week), within-season temporal stability in retail food availability, prices, and quality.

DESIGN:

In-person observations of retail food stores at 2 time points, 2 weeks apart.

SETTING:

Southwest Chicago, IL.

SAMPLE:

157 food stores.

MAIN OUTCOME MEASURES:

Availability and prices of food items selected from the following food groups: fruit, vegetables, grains, meats and beans, and dairy, as well as fresh produce quality.

ANALYSIS:

Temporal stability was tested for availability using a McNemar test and for price and quality using a Wilcoxon signed-rank test.

RESULTS:

Measures of food availability and prices as well as fresh produce quality at stores were generally stable at the 2 time points.

CONCLUSIONS AND IMPLICATIONS:

This study suggests that a single observation may be sufficient to accurately characterize within-season food availability, food prices, and fresh produce quality.

PMID:
20129186
PMCID:
PMC2913966
DOI:
10.1016/j.jneb.2009.01.005
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center