8e9f9fba_nagement_Purchasing_Consortium__Comments_Qualifications
[Vendor] Iowa Chronic Care Consortium (www.iowaccc.com) An elegant "natural control" model in which the state was divided into rural and urban counties, using of course the same criteria to qualify for Medicaid. Hence the control and study populations were very similar (and very large) but there was an added control in that other event categories were tracked to see if all the events declined, which would have suggested other factors at work besides a diabetes intervention. As it happened, there was a highly significant decline in diabetes events in the study population with no change in frequency of any the other events not related to diabetes control in either the control or study populations. The full write-up is here. [Comments/Qualifications] 
The study is a model of transparency, elegance, validity and plausibility. The raw data is attached.
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Comments/Qualifications