Table 2.

Agreement statistics for Latino food stores and restaurants, and for all food stores and restaurants by Hispanic composition of the census tract, for Nielsen TDLinx (TDLinx) and Dun & Bradstreet (D&B) relative to field observations of food stores and restaurants in thirty-one census tracts in Durham County, NC, USA, July–August 2012

	Sensitivity*
	TDLinx		D&B		TDLinx and/or D&B
Food outlet type†	n	%	n	%	n	%
Food stores‡
Latino stores (all census tracts)
Grocery and supermarket (n 9)	1	11	4	44	4	44
Convenience stores (n 6)	2	33	4	67	4	67
Small specialty food stores (n 8)	1	13	4	50	5	63
Other (n 1)	0	0	0	0	0	0
Total Latino food stores (n 25)	5	20	13	52	14	56
All food stores by Hispanic/non-Hispanic census tracts
Hispanic§ census tracts (total food stores, n 73)	51	70	40	55	60	82
Non-Hispanic census tracts (total food stores, n 101)	71	70	52	51	74	73
Restaurants
Latino restaurants (all census tracts)
Counter service, not fast food (n 12)	N/A		4	33	N/A
Fast food (n 1)	N/A		0	0	N/A
Sit-down restaurants (n 13)	N/A		6	46	N/A
Total Latino restaurants (n 26)	N/A		10	38	N/A
All restaurants by Hispanic/non-Hispanic census tracts
Hispanic census tracts§ (total restaurants, n 130)	N/A		86	66	N/A
Non-Hispanic census tracts (total restaurants, n 207)	N/A		114	55	N/A

N/A, not applicable.

^*Match defined as a food store observed in the field and listed in a secondary data source.

^†Food outlets that were classified as both a food store and a restaurant by the field auditors (n 10) were included in both the food store and restaurant counts, regardless of their classification in secondary data sources.

^‡One food store was not given a store sub-category during the field audit.

^§Hispanic census tract defined as ≥23·4 % Hispanic population (upper quartile).