U.S. Births Hint at Bias for Boys in Some Asians

The trend is buried deep in United States census data: seemingly minute deviations in the proportion of boys and girls born to Americans of Chinese, Indian and Korean descent. Demographers say the statistical deviation among Asian-American families is significant, and they believe it reflects not only a preference for male children, but a growing tendency for these families to embrace sex-selection techniques, like in vitro fertilization and sperm sorting, or abortion. NY Times