Complete prevalence and indicators of cancer cure: enhanced methods and validation in Italian population-based cancer registries.

To describe the procedures to derive complete prevalence and several indicators of cancer cure from population-based cancer registries. Cancer registry data (47% of the Italian population) were used to calculate limited duration prevalence for 62 cancer types by sex and registry. The incidence and survival models, needed to calculate the completeness index ( For the most frequent cancer types, the Weibull survival model stratified by sex and age showed a very good fit with observed survival. For men diagnosed with any cancer type at age 65-74 years, CF was 41%, while the NS was 49% until age 100 and 50% until age 90. In women, similar differences emerged for patients with any cancer type or with breast cancer. Among patients alive in 2018 with colorectal cancer at age 55-64 years, 48% were already cured (had reached their specific TTC), while the cure prevalence (lifelong probability to be cured from cancer) was 89%. Cure prevalence became 97.5% (2.5% will die because of their neoplasm) for patients alive >5 years after diagnosis. This study represents an addition to the current knowledge on the topic providing a detailed description of available indicators of prevalence and cancer cure, highlighting the links among them, and illustrating their interpretation. Indicators may be relevant for patients and clinical practice; they are unambiguously defined, measurable, and reproducible in different countries where population-based cancer registries are active.

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Copyright © 2023 Toffolutti, Guzzinati, De Paoli, Francisci, De Angelis, Crocetti, Botta, Rossi, Mallone, Zorzi, Manneschi, Bidoli, Ravaioli, Cuccaro, Migliore, Puppo, Ferrante, Gasparotti, Gambino, Carrozzi, Stracci, Michiara, Cavallo, Mazzucco, Fusco, Ballotari, Sampietro, Ferretti, Mangone, Rizzello, Mian, Cascone, Boschetti, Galasso, Piras, Pesce, Bella, Seghini, Fanetti, Pinna, Serraino, Dal Maso and AIRTUM Working Group.

Déclaration de conflit d'intérêts

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.