The poverty rate is the percentage of a population living in poverty and is a useful measure of economic deprivation in a neighborhood or community. Census tract poverty rates from the 2000 . Census were linked to New Jersey State Cancer Registry incidence data. New Jersey census tracts were grouped by the poverty rate into three poverty area groups. The three poverty area groups were defined as follows: areas with low poverty (less than 10% of the population below the poverty level); areas with medium poverty (10 to of the population below the poverty level);.