Survival of cancer patients in Navarre and comparison with Spain

Background. To analyze the survival of adult cancer patients in Navarre, describe its trend, and compare the data for this Span-ish Autonomous Community against that reported for Spain. Methods. Records of adult cancer patients were retrieved from the Navarre's population-based cancer registry for two periods (1999-2007 and 2008-2016). The vital status had been updated to 2020. Observed survival, net survival and age-standardized net survival at five years with 95% confidence intervals were esti-mated overall and for twenty-nine cancer groups Results. We analyzed 57,564 cases. Age-standardized net surviv-al was 59.9% (59.1-60.8) and 63.8% (62.8-64.7) for males and females diagnosed with cancer during the 2008-2016 period, respectively. Age-standardized net survival ranged from 13.4% (10.4-17.4) for pancreatic cancer to 94.0% (88.1-100) for thyroid cancer in male patients, and from 11.9% (7.2-19.7) for liver cancer to 95.6% (92.6-98.6-%) for thyroid cancer in female pa-tients. Compared with cases diagnosed in the 1999-2007 period, age-standardized net survival increased in 10 cancer groups, re-sulting in an overall increase of 5.1 (4.1-6.0) percentage points. The age-standardized net survival in Navarre was 2.7 (1.9-3.4) percentage points higher than that described for Spain for the 2008-2013 period. Conclusions. In Navarre, the survival of cancer patients di-agnosed during the 2008-2016 period improved significantly in comparison to the 1999-2007 period. Different factors may explain this improvement, including earlier diagnoses, more effective treatment options, and better healthcare processes. Overall, survival was higher in women than in men. Our results suggest a higher survival rate in Navarre than in Spain.