Table 4.

Is there a “full-line” grocery store in this neighborhood?

	Census Tract Neighborhoods		Census Block Group Neighborhoods
	Yelp	Reference USA	Yelp	Reference USA
True positive rate	58%	81%	56%	78%
Miss rate	42%	19%	44%	22%
Precision (PPV)	38%	32%	33%	26%
False discovery rate	62%	68%	67%	74%
True negative rate	70%	47%	88%	77%
False positive rate	30%	53%	12%	23%

Comparing neighborhoods with at least one grocery store in Yelp and Reference USA with Detroit Food Map

PPV positive predictive value