Prevalence of and factors related to anemia among Japanese adult women: Secondary data analysis using health check-up database.

The issue of anemia is important in terms of a woman's preconception health. This study aimed to conduct an exploratory investigation of the prevalence of and factors related to anemia in non-pregnant Japanese women. Secondary data analysis was conducted using a database of women aged 20-49 years old who had attended an annual health check-up at a hospital in Tokyo (n = 10,598).