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Current trends in bladder cancer in England and Wales
1Department of Urology, Royal Shrewsbury Hospital, Shrewsbury, United Kingdom.
Purpose:
We examined trends in bladder cancer (BC) incidence, mortality and survival in England and Wales during a 30-year period.
Materials And Methods:
Age standardized incidence and mortality rates for BC, cohort incidence ratios, and 1 and 5-year relative survival from BC were calculated, and current trends were assessed.
Results:
Between 1971 and 1998 the total number of cases of BC increased by 57% from around 7,200 to almost 11,400. Between 1971 and 1998 directly age standardized incidence increased by 16% in males and 37% in females. Directly age standardized mortality decreased by 26% in males and showed little change in females during the same period. Five-year relative survival improved by around 15% points in the 1970s and early 1980s. However, there was less improvement in survival thereafter in that 5-year relative survival for patients diagnosed in 1993 to 1995 was 67% in men and 58% in women.
Conclusions:
With an almost 60% increased incidence during the last 3 decades, BC incidence remains much higher in men but has increased more rapidly in women. There have been steady decreases in mortality rates, more marked in men than in women. Unusually, women have a significantly lower survival rate than men. Reasons for these patterns and trends are unclear. The trends in bladder cancer incidence by birth cohort suggest that the relationship with smoking may not be that strong and that other factors may be involved. Further research should focus on reasons for the recent increase in bladder cancer incidence in younger female birth cohorts.
