Source:
Associated PressA 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.
... The study looked at crime reports for neighborhoods surrounding 600 dispensaries in the 10 days before and 10 days after Los Angeles officials shuttered the pot clinics last summer after a new ordinance went into effect. The analysis showed crime increased about 60 percent within three blocks of a closed dispensary compared with those that remained open.
... The Los Angeles city attorney’s office called the study deeply flawed and demanded the retraction. Rand pulled the study from its website earlier this month.
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http://www.washingtonpost.com/national/health-science/rand-corp-think-tank-retracts-study-on-medical-marijuana-dispensary-closings-and-crime-rates/2011/10/24/gIQAZC2zCM_story.html