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To develop a valid and feasible short-form corner store audit tool (SCAT) that could be used in-store or over the phone to capture the healthfulness of corner stores.

Nonexperimental.

Four New Jersey cities.

Random selection of 229 and 96 corner stores in rounds 1 and 2, respectively.

An adapted version of the Nutrition Environment Measures Survey for Corner Stores (NEMS-CS) was used to conduct in-store audits. The 7-item SCAT was developed and used for round 2 phone audits.

Exploratory factor analysis and item response theory were used to develop the SCAT.

The SCAT was highly correlated with the adapted NEMS-CS (r = .79). Short-form corner store audit tool scores placed stores in the same healthfulness categories as did the adapted NEMS-CS in 88% of the cases. Phone response matches indicated that store owners did not distinguish between …