Difference in net survival using regional and national life tables in Japan |
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| Institution: | 1. Department of Medical Informatics, Hirosaki University Graduate School of Medicine, Japan;2. Department of Epidemiology, Radiation Effects Research Foundation, Japan;3. Saku Central Hospital Advanced Care Cente, Japan;4. Clinical Research Support Center, Hirosaki University Hospital, Japan;5. Department of Medical Informatics, Hirosaki University Hospital, Japan;1. Research Unit for General Practice, Aarhus, Bartholins Alle 2, 8000 Aarhus C, Denmark;2. Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 82, 8200 Aarhus C, Denmark;1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, South Korea;2. Department of Hematology and Medical Oncology, Kyung Hee University Hospital, School of Medicine, Kyun Hee University, Seoul, South Korea;3. Department of Pulmonary, Allergy and Critical Care Medicine, Kyung Hee University Hospital at Gangdong, School of Medicine, Kyung Hee University, Seoul, South Korea;1. Ascension Saint Francis Hospital, 355 Ridge Ave, Evanston, IL 60202, USA;2. MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA;3. Texas Health Presbyterian Hospital Dallas, 8200 Walnut Hl Ln, Dallas, TX 75231, USA;1. Université Paris-Saclay, UVSQ, Inserm, CESP, Exposome and Heredity Team, Villejuif, France;2. Service Urologie, Clinique Beau Soleil, Montpellier, France;3. Institut médical d′Analyse Génomique-Imagenome, Labosud, Montpellier, France;4. Registre des Tumeurs de l′Hérault, EA 2415, ICM, Montpellier, France;1. Endocrine Department, Zibo Central Hospital, Zibo 255000, Shandong, China;2. Department of Pathology, Zibo Central Hospital, Zibo 255000, Shandong, China;1. Department of Biostatistics and Epidemiology, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, United States;2. Section of Hematology/Oncology, Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, United States;3. Center for Applied Social Research, College of Arts and Sciences, University of Oklahoma, Norman, OK, 73072, United States |
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| Abstract: | BackgroundNational life table is commonly used for estimating cancer net survival. However, the national life table does not reflect condition of people in local area accurately, because there are disparities in cancer mortality rates among the local area in many cases. We investigated magnitude of difference in cancer net survival using the local area in Japan and Japanese life tables.MethodsWe analyzed data from 32,942 cancer patients diagnosed between 2010 and 2012 in Aomori prefecture, Japan. Expected survival rates in Aomori (ESA) and Japan (ESJ) were estimated based on the life table of each area. Five-year net survival rates using ESA and the ESJ were estimated using the Pohar-Perme method.ResultsThe difference between net survival rates using the ESA (NSA) and the ESJ (NSJ) were larger than in men (0.3－3.0%) than in women (0.1－0.8%). The largest difference in the net survival rate was observed in prostate cancer patients, because the difference in the expected survival in oldest old men was remarkable.ConclusionTwo factors affected the difference in the net survival rates resulting from the sensitivity analysis. The difference was larger (1) among older patients or (2) with a longer observation period (person-years). |
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| Keywords: | Expected survival Net survival Life table Cancer Population-based cancer registry |
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