ORIGINAL RESEARCH

Small Food Stores and Availability of Nutritious Foods: A Comparison of Database and In-Store Measures, Northern California, 2009

Store type	County
	Alameda	Contra Costa	Marin	Sacramento	San Francisco	Santa Clara	Total
Large grocery store	1	0	1	1	0	1	4
Small grocery store	2	5	4	4	0	2	17
Convenience store	11	5	0	4	21	6	47
Specialty store	7	1	1	5	1	4	19
Not found or not a food store	4	2	1	2	3	3	15
Total	25	13	7	16	25	16	102

Figure 1. Spatial distribution of food stores surveyed, by store type and county, San Francisco Bay Area and Sacramento, California, 2009.

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Distinguishing criteria	Store type
	Grocery	Convenience	Specialty
In-store survey (a)
Variety of vegetables ≥7 and area ≥179 sq ft	17	0	0
Variety of vegetables ≥7 and area <179 sq ft	2	3	4
Variety of vegetables <7 and nutritious food score ≥6	1	42	3
Variety of vegetables <7 and nutritious food score <6	1	2	12
Sociodemographic variables (b)
Population density ≥13,850 per sq mi	2	27	3
Population density <13,850 per sq mi and Asian population ≥40%	0	1	6
Population density <13,850 per sq mi, Asian population <40%, and white population <60%	8	15	3
Population density <13,850 per sq mi, Asian population <40%, white population ≥60%, and black population ≥20%	9	2	1
Population density <13,850 per sq mi, Asian population <40, white population ≥60%, and black population <20%	2	2	6

Figure 2. Classification and regression tree results based on a) in-store survey and b) sociodemographic variables.

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