Abstract
Objective:Predictors of participation in breast cancer screening in recent years or the trend of participation rate by predictors over the years has not been investigated in Japan. In this study, we investigated predictors for participation in breast cancer screening and analyzed the trend of participation rate depending on the predictors using nationally representative survey data in Japan. Methods:The data of “Comprehensive Survey of Living Conditions” in Japan from 2001 to 2013 were used. Participation in breast cancer screening was used as an outcome. Next, as explanatory variables, we used age group, marital status, living arrangements, educational level, household income, employment status, smoking status, regular outpatient visit status, and self-rated health status. Then, the participation rate for breast cancer screening was calculated for each of the factors over the years. In addition, multivariate logistic regression analysis was conducted to analyze the association between each factor and the participation rate using data from 2010 and 2013. Results:We found that non-married women, women with lower educational level, women with low household income, self-employed or unemployed women, smokers, and women with low self-rated health status were significantly less likely to participate in breast cancer screening. Conversely, the participation rate increased for all predictor groups from 2001 to 2013, and the increase in the participation rate for never-married women was particularly evident compared with the other marital statuses. However, significant differences in the participation rate for breast cancer screening existed depending on marital status, household income, employment status, and smoking status throughout the analyzed years. Conclusion:Our findings suggest that further recommendations for breast cancer screening are particularly needed among women of low socioeconomic status and those who are self-employed or unemployed to increase the participation rate in Japan.
Highlights
IntroductionAccording to the Patient Survey and the Vital Statistics in Japan, the estimated number of patients with breast cancer increased from 259.1 to 359.5 per 100,000 women between 1999 and 2017 (Ministry of Health, Labour and Welfare of Japan, 2020)
Breast cancer is a representative type of cancer
We investigated predictors for participation in breast cancer screening and analyzed the trend of participation rate depending on the predictors using nationally representative survey data in Japan
Summary
According to the Patient Survey and the Vital Statistics in Japan, the estimated number of patients with breast cancer increased from 259.1 to 359.5 per 100,000 women between 1999 and 2017 (Ministry of Health, Labour and Welfare of Japan, 2020). The mortality rate for breast cancer increased from 13.9 to 23.0 per 100,000 individuals during the same period (Ministry of Health, Labour and Welfare of Japan, 2020). Age-standardized mortality rates of representative cancer types decreased in this period, that for breast cancer increased (Okui, 2020). Identifying causes of the increase in breast cancer and taking preventive measures in Japan is important. The participation rate of breast cancer screening in Japan is known to be relatively low compared with Western countries (Sano et al, 2017), and an increase in the rate of participation is needed for early treatment of breast cancer
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