title: Long-term survival and conditional survival of cancer patients in Japan using population-based cancer registry data.
abstract: Although we usually report 5-year cancer survival using population-based cancer registry data, nowadays many cancer patients survive longer and need to be followed-up for more than 5 years. Long-term cancer survival figures are scarce in Japan. Here we report 10-year cancer survival and conditional survival using an established statistical approach. We received data on 1,387,489 cancer cases from six prefectural population-based cancer registries in Japan, diagnosed between 1993 and 2009 and followed-up for at least 5 years. We estimated the 10-year relative survival of patients who were followed-up between 2002 and 2006 using period analysis. Using this 10-year survival, we also calculated the conditional 5-year survival for cancer survivors who lived for some years after diagnosis. We reported 10-year survival and conditional survival of 23 types of cancer for 15-99-year-old patients and four types of cancer for children (0-14 years old) and adolescent and young adults (15-29 years old) patients by sex. Variation in 10-year cancer survival by site was wide, from 5% for pancreatic cancer to 95% for female thyroid cancer. Approximately 70-80% of children and adolescent and young adult cancer patients survived for more than 10 years. Conditional 5-year survival for most cancer sites increased according to years, whereas those for liver cancer and multiple myeloma did not increase. We reported 10-year cancer survival and conditional survival using population-based cancer registries in Japan. It is important for patients and clinicians to report these relevant figures using population-based data.
authors.affiliation: Center for Cancer Control and Statistics, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Japan.
authors.forename: Yuri
authors.initials: Y
authors.lastname: Ito
authors.forename: Isao
authors.initials: I
authors.lastname: Miyashiro
authors.forename: Hidemi
authors.initials: H
authors.lastname: Ito
authors.forename: Satoyo
authors.initials: S
authors.lastname: Hosono
authors.forename: Dai
authors.initials: D
authors.lastname: Chihara
authors.forename: Kayo
authors.initials: K
authors.lastname: Nakata-Yamada
authors.forename: Masashi
authors.initials: M
authors.lastname: Nakayama
authors.forename: Masashi
authors.initials: M
authors.lastname: Matsuzaka
authors.forename: Masakazu
authors.initials: M
authors.lastname: Hattori
authors.forename: Hiromi
authors.initials: H
authors.lastname: Sugiyama
authors.forename: Isao
authors.initials: I
authors.lastname: Oze
authors.forename: Rina
authors.initials: R
authors.lastname: Tanaka
authors.forename: Etsuko
authors.initials: E
authors.lastname: Nomura
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Nishino
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Matsuda
authors.forename: Akiko
authors.initials: A
authors.lastname: Ioka
authors.forename: Hideaki
authors.initials: H
authors.lastname: Tsukuma
authors.forename: Tomio
authors.initials: T
authors.lastname: Nakayama
mesh_terms: D000367:Age Factors; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D009369:Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000401:mortality*; D011159:Population Surveillance; D012042:Registries
keywords: Cancer; cancer registry; conditional survival; period analysis; survival