2022
DOI: 10.1111/cas.15320
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Trends in cervical cancer incidence and mortality of young and middle adults in Japan

Abstract: In most high‐resource countries with organized screening programs, the incidence and mortality of cervical cancer is decreasing. Recent statistics have also revealed a reduction in invasive cervical cancer incidence as a result of national vaccination programs. Paradoxically, cervical cancer incidence has increased in Japan, particularly amongst women of reproductive age. This study aimed to examine the trends in cervical cancer incidence and mortality for young and middle adult women in Japan, by analyzing tr… Show more

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Cited by 18 publications
(11 citation statements)
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“…Figure1shows time trends in ICC incidence between 1975 and 2019 stratified by age group, based on data of 418 918 ICC cases from the national estimates of cancer incidence and the national cancer registry (2016-2019) 7. The incidence of ICC among Japanese women aged 20-29 years significantly increased during 1975-2011 (APC 5.9, 95% confidence interval [95%CI] 5.6 to 6.1, p < 0.001), in line with previous reports,[13][14][15] but converted to a decreasing trend from 8.0 to 2.8 (reduction rate 65.0%) during 2011-2020 (APC −13.5, 95%CI −11.9 to −14.5, p < 0.001). No similar decline was observed for older age groups.…”
supporting
confidence: 89%
“…Figure1shows time trends in ICC incidence between 1975 and 2019 stratified by age group, based on data of 418 918 ICC cases from the national estimates of cancer incidence and the national cancer registry (2016-2019) 7. The incidence of ICC among Japanese women aged 20-29 years significantly increased during 1975-2011 (APC 5.9, 95% confidence interval [95%CI] 5.6 to 6.1, p < 0.001), in line with previous reports,[13][14][15] but converted to a decreasing trend from 8.0 to 2.8 (reduction rate 65.0%) during 2011-2020 (APC −13.5, 95%CI −11.9 to −14.5, p < 0.001). No similar decline was observed for older age groups.…”
supporting
confidence: 89%
“…Additionally, Japan’s HPV vaccination coverage is poor (<1%) [ 65 ], despite the fact that the Japanese government has recently confirmed the safety of this vaccination by ending the restriction on active recommendation and strengthening the support system for HPV vaccination [ 66 ]. Hence, our findings warrant greater efforts in improving the effectiveness of cervical cancer control programs in Japan, particularly the cervical cancer screening rate and HPV vaccination coverage, to better control cervical cancer burdens in the future [ 67 ].…”
Section: Discussionmentioning
confidence: 99%
“…However, an increasing incidence of cervical cancer has been reported in Japan, especially among women in their reproductive years. 10 It is also estimated that the reduction in vaccination coverage from 2013 to 2019 would result in 24,600–27 300 additional cervical cancer cases and 5 000–5 700 deaths compared to if coverage had remained at about 70% after 2013. 9 One possible reason for the failure to make a rapid decision is the influence of media coverage, which led to the spread of false risk perceptions among the general public, resulting in lawsuits and political disputes.…”
Section: Remaining Hpv Vaccination Program Challengesmentioning
confidence: 99%