N'ikpeazụ, e nwere n'ezie ọtụtụ ụzọ dị iche iche nke ịgbakọ nzaghachi ọnụego; ndị a ọ pụrụ na-kọwara n'ụzọ zuru ezu na a akụkọ site American Association of Public Opinion Researchers (AAPOR) (Public Opinion Researchers} 2015) .
