as an illustration nearly of those in the secondpoorest strata are in the two richest income quintiles up from in anecdotal evidence suggests that measurement has been altered to widen access to subsidies for political purposes this calls for a more systematic crosschecking of information eg by using a unique identification number such as the cedula for all social and tax purposes the sisben is updated every years which may not be often enough to reflect changes in the personal situation eg loss of job