- Factors related to women's knowledge of BC: women with a high school education or higher are 1.5 times more likely to gain knowledge than at a lower secondary school level (95% CI: 1.12 - 2.02); women who have ever had access to media information about BC have 2.8 times higher knowledge than the group who have never had access (95% CI: 1.54 - 5.09); Women in Cat Hai have 2.49 times higher knowledge ability than women in Thuy Nguyen (95% CI: 1.79 - 3.44). - Factors related to women's attitudes about BC: accommodation in Cat Hai compared to Thuy Nguyen with aOR = 4.61 (95% CI: 1.84 - 11.53).