China is the most populous country in the world.
Research suggests that the prevalence of anaemia decreased from 1990 to 2000 among pregnant women in Asia and in China
(8)
. However, in China, national data on the prevalence of anaemia among pregnant women are limited to only three studies
(9–11)
, and the sampling methods in these studies were different, making comparison of the results difficult. Other Chinese studies on the prevalence of anaemia