Interesting Medicaid Stat

According to the Kaiser Family Foundation, "Medicaid’s per-person costs grew 2.5 percent between 2007 and 2010, significantly slower than the rate of growth in private insurance and a full point lower than overall medical trend"

KFF provides this handy chart for comparison purposes:

Pretty impressive, no?

Then see if you can spot the flaw in this conclusion:

"Medicaid has done considerably better in controlling per capita costs than has private coverage.”

[Hat Tip: FoIB Holly R]