Changes

Experience with [http://www.gpoba.org/about OB OBA] is new, but growing. The difference with other subsidies is that OBAs are targeted, for example, to the poorest families (Cambodia) or to the poorest neighbourhoods (Paraguay) clarifying why subsidy is given and they are performance-based. The provider largely self-finances the service, receiving reimbursement mostly after the verification of successful delivery. The latter may reduce possibilities for small providers with limited capital. A bonus-malus approach might be more feasible, perhaps linked to longer-term system performance.