 Nikpeazụ, e nwere nezie ọtụtụ ụzọ dị iche iche nke ịgbakọ nzaghachi ọnụego; ndị a ọ pụrụ na-kọwara nụzọ zuru ezu na a akụkọ site American Association of Public Opinion Researchers AAPOR Public Opinion Researchers 2015 . 