incidence study การใช้

• A recent HIV-incidence study showed Nigeria's infection dropping to 5 percent of the population in 2003 from 5.8 percent in 2001.
• A recent HIV-incidence study showed Nigeria's infection dropping to 5 percent of the population in 2003 from 5 . 8 percent in 2001.
• Benefit incidence studies typically find spending on health, education and transfer payments to be strongly progressive, while finding mixed results on tax progressivity in different countries.
• However it also has regressive implications since tax incidence studies show that ultimately it would be poor people who would bear a great deal of the burden of many pollution taxes . " In other words, many pollution taxes would be highly regressive and therefore aggravate economic injustice . ".