Ka cika wannan magana: Ben Kiernan ya kimanta cewa an kashe mutane miliyan 1.7. Wani mai bincike mai suna Craig Etcheson da ke aiki a wata cibiyar bincike a Kambodiya ya ce adadin mutanen da suka mutu ya kai miliyan biyu zuwa miliyan biyu da rabi, kuma "mai yiwuwa" ya kai miliyan biyu da dubu ɗari biyu. Bayan ya yi shekara 5 yana bincike a kan kaburbura 20,000, ya kammala cewa "waɗannan kaburbura masu yawa suna ɗauke da gawarwakin mutane 1,386,734 da aka kashe". Binciken Majalisar Dinkin Duniya ya ba da rahoton mutuwar miliyan 2 zuwa 3, yayin da UNICEF ta kiyasta cewa an kashe miliyan 3. Binciken ƙididdigar yawan jama'a da Patrick Heuveline ya bayar ya nuna cewa an kashe tsakanin 'yan Kambodiya miliyan 1.17 zuwa miliyan 3.42, yayin da Marek Sliwinski ya nuna cewa miliyan 1.8 adadi ne mai ra'ayin mazan jiya. Ko da Khmer Rouge sun yarda cewa an kashe miliyan 2 duk da cewa sun danganta wadannan mutuwar ga mamayewar Vietnam da ta biyo baya. A ƙarshen 1979, Majalisar Dinkin Duniya da jami'an Red Cross suna gargadin cewa wasu 'yan Kambodiya miliyan 2.25 sun fuskanci mutuwa ta hanyar yunwa saboda "kusan hallaka al'ummar Kambodiya a karkashin mulkin Firayim Minista Pol Pot", wanda aka ceto ta hanyar taimakon kasa da kasa bayan
mamayewar Vietnam.