Effectiveness of Cervical Cancer Screening Based on a Mathematical Screening Model using data from the Hiroshima Prefecture Cancer Registry

Here we assessed the effectiveness of cervical cancer screening using data from the Hiroshima PrefectureCancer Registry regarding patient age at the start of screening and differences in screening intervals. A screeningmodel was created to calculate the health status in relation to prognosis following cervical cancer screening andits influence on life expectancy. Epidemiological data on the mortality rate of cervical cancer by age groups andmortality rates from the Hiroshima Prefecture Cancer Registry were used for the model projections. Our resultsshowed that life expectancy when screening rate was 100% compared with 0% was extended by approximately1 month. Furthermore, when the incidence of cervical cancer was 0% compared with the screening rate was100%, life expectancy was extended by a maximum of 3 months. Moreover, among individuals affected by cervicalc ancer, a difference of 13 years in life expectancy was calculated between screened and unscreened groups.