title: 5-year survival rates for primary cancer sites at cancer-treatment-oriented hospitals in Japan.
abstract: In Japan, The Japanese Association of Clinical Cancer Centers (JACCCs) was established in 1965 by systematizing cancer-treatment-oriented hospitals. The core center of JACCCs is the National Cancer Center in Tokyo. In 1984, JACCCs created The "Improvement for Clinical Cancer Centers in Japan" Study Group (The Study Group) which has subsequently routinely evaluated the effectiveness of the therapy that is provided. In general, the 5-year (relative) survival rate is employed as an indicator of the treatment efficacy. The present survey used the PC software program KAP developed by Chiba Cancer Center in Japan, to calculate 5-year observed survival rates and the 5-year relative survival rates using Ederer II methods. The overall 5-year relative survival rates in patients with stomach (15,353 patients), colon (5,054), rectum (3,695), lung (10,153), breast (11,302) and cervix of the uterus (6,336) were 68.7%, 72.2%, 69.4%, 28.1%, 86.1% and 81.1%, respectively. The survival rates discussed so far are principally observed survival rates. The 5-year relative survival rate for those institutions that specialize in cancer treatment should become an index for Japanese cancer treatment.
authors.affiliation: Division of Cancer Prevention and Cancer Control, Kanagawa Cancer Center, Yokohama 241-0815, Japan. okamoto@gancen.asahi.yokohama.jp
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Okamoto
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Saruki
authors.forename: Haruo
authors.initials: H
authors.lastname: Mikami
authors.forename: Kousuke
authors.initials: K
authors.lastname: Yamashita
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Maruyama
authors.forename: Tokujiro
authors.initials: T
authors.lastname: Yano
authors.forename: Yuka
authors.initials: Y
authors.lastname: Imamura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kaneko
authors.forename: Hideo
authors.initials: H
authors.lastname: Tanaka
mesh_terms: D001943:Breast Neoplasms / Q000175:diagnosis / Q000401:mortality / Q000628:therapy; D002173:Cancer Care Facilities; D002423:Cause of Death; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000401:mortality / Q000628:therapy; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D009369:Neoplasms / Q000401:mortality* / Q000473:pathology* / Q000628:therapy; D015995:Prevalence; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000401:mortality / Q000628:therapy; D012042:Registries; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000401:mortality / Q000628:therapy; D016019:Survival Analysis; D002583:Uterine Cervical Neoplasms / Q000175:diagnosis / Q000401:mortality