[Bladder tumor lethality. Results in the autonomous community of Rioja between 1975-1991]. / Letalidad por tumor vesical. Resultados en la comunidad autónoma de la Rioja entre los años 1975-1991.

Between 1975-1991, a total of 557 cases of bladder carcinoma were identified in the Autonomous Community of La Rioja (CAR) which were followed up to December 1994. The overall lethality was 21.9%. 492 cases with 22.35% lethality were identified in males. In females, however, there was 65 cases with 18.46% lethality. The comparison of males and females lethality resulted in p = 0.525. Lethality between cases diagnosed within each 5-year period analyzed is: 1975-1981: 177 cases, lethality 23.72%. 1982-1986: 168 cases, lethality 30.95%. 1987-1991: 212 cases, lethality 13.20%. Between the first and the second 5-year periods, p = 0.132; between the first and third 5-year periods p = 0.007 and between the second and third 5-year periods p < 0.000. Bladder tumours accounts in CAR for a 22.35% lethality. Lethality is higher in males that in females but the difference is not statistically significant. In the last 5-year period assessed, 1987-1991, a reduction of lethality from bladder neoplasms has been documented.

[Bladder cancer survival, study of 557 cases identified at the autonomous community of La Rioja from 1975 to 1991]. / Supervivencia por cáncer de vejiga, estudio de 557 casos identificados en la Communidad Autónoma de La Rioja entre 1975 y 1991.

OBJECTIVE: To analyze survival in 557 cases of bladder cancer that had been detected in La Rioja (Spain) from 1975 to 1991. METHODS/RESULTS: The Kaplan Meier and Mantel and Haenszel methods were used for the statistical analyses. The survival rate for each 5-year period analyzed was 69%, 58% and 73%, respectively. Most deaths occurred within the first 24 months. The survival rates were 25%, 21% and 0%, respectively, for infiltrating tumors and 84%, 76% and 85% for superficial tumors was of the. The survival rates for males and females were not statistically significant. CONCLUSION: The survival rate in patients with bladder cancer has increased. Patients with infiltrating bladder tumors have a worse prognosis. The survival rates for males and females are not statistically significantly different.