Limitations
Our cohort was largely comprised of Chinese, highly educated women who are likely to engage in mammography screening. This is likely not reflective of the general population of healthy, peri- or post-menopausal women in Malaysia. Furthermore, it is possible that the women who participated in this study were those who enjoyed soya foods or did not believe it was harmful to their health, which could lead to important biases in the findings. However, our results suggest that some women joined even though they had reservations about the health effects of soya. The findings in our study were limited by the small sample size in terms of comparison of women who were either in the intervention or control arm. While this study was well-powered to detect larger differences in perception between the intervention and control arms, it required a larger sample size to detect smaller differences.