Some evidence suggests that in Asia, especially in China with its one-child policy, additional fertility behavior, infant deaths, and female birth information may be hidden or not reported.
Beberapa bukti menunjukkan bahwa di Asia, terutama di Cina dengan kebijakan satu-anak, perilaku kesuburan, kematian bayi, dan informasi kelahiran perempuan mungkin disembunyikan atau tidak dilaporkan.