Some key factors across states that will determine the type of experimentation they may attempt include:
- relative intensity of the current system, especially in Medicare. There is tremendous variation if per capita Medicare expenditures across the nation and high spender areas will have fewer options because providers are used to doing more and being paid more; it will be easier if you are in a 'low intensity practice pattern state'
- relative economic vitality of the state
- current rate of uninsurance. Massachusetts is around 2.5% uninsured, while Texas is around 25%
- Health outcomes/population health
- Medicaid share rate (what proportion of Medicaid costs are paid by the federal government; poorer states get more federal subsidy)
- Politics of the state
Update: Aaron Carrol also writing about Vermont.