A proposal for maintaining privacy protection in large data bases by the use of partially aggregated data instead of the original individual data. Proper micro aggregation techniques can serve to protect the confidential nature of the individual data with minimumal information loss....

The problem addressed in this article is that of finding levels of income which typify equivalent levels of poverty for families in different circumstances. An index is constructed which has, as components, descriptions of family circumstances-such as number of persons and geographical location....