In her PhD dissertation at Harvard, Emily Oster argued that Sen's hypothesis did not take account of the different rates of prevalence of the Hepatitis B virus between Asia and other parts of the world.
Dalam disertasinya di Harvard, Emily Oster berpendapat bahwa hipotesis Sen tidak memperhitungkan tingkat prevalensi yang berbeda dari virus Hepatitis B antara Asia dan bagian lain dunia.