SANTA MONICA, Calif. (AP) — A nonprofit think tank on Monday retracted a widely reported study that linked last year's closing of hundreds of medical marijuana dispensaries in Los Angeles to a rise in crime rates in surrounding neighborhoods.
Santa Monica-based Rand Corp. said in a statement that questions raised after the study was released last month prompted an unusual internal review.
Researchers relied on a commercial crime mapping service, believing it included information from various jurisdictions, including the Los Angeles Police Department. However, that agency did not give data to the service.
"That review determined the crime data used in the analysis are …
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