Ro. Roberts et al., Decline in prostate cancer mortality from 1980 to 1997, and an update on incidence trends in Olmsted county, Minnesota, J UROL, 161(2), 1999, pp. 529-533
Purpose: We describe trends in prostate cancer mortality from 1980 to 1997,
before and after the introduction of serum prostate specific antigen (PSA)
testing to the community medical practice, and provide an update on trends
in incidence since 1992.
Materials and Methods: All men with a diagnosis of prostate cancer who died
between 1980 and 1997 were identified and parts 1 and 2 of the death certi
ficates were reviewed for a diagnosis of prostate cancer. In addition, all
men with biopsy proved prostate cancer diagnosed between 1983 and 1995 were
identified. The complete medical records of incident cases of prostate can
cer were reviewed for signs and symptoms at diagnosis and for the first tre
atment received.
Results: Age adjusted, community mortality rates from prostate cancer incre
ased from 25.8/ 100,000 men in 1980 to 1984 to a peak of 34/100,000 in 1989
to 1992, and have since declined to 19.4/100,000 in 1993 to 1997 (22% decl
ine in mortality, 95% confidence interval 49% decline to 17% increase). The
overall age adjusted incidence rates which peaked at 209/100,000 person-ye
ars in 1992 as previously reported declined to 108/100,000 in 1993 and 132/
100,000 in 1995. A similar pattern was observed for organ confined cancers.
However, incidence rates for regional or distant disease were suggestive o
f a continuing downward trend from 1989 to 1992 compared to 1993 to 1995 (1
2% decline per year, p = 0.07).
Conclusions: These data demonstrate that despite the increase in prostate c
ancer mortality rates in the mid to late 1980s, mortality rates in 1993 to
1997 are lower than in the years before serum PSA testing. While chance can
not be ruled out, the data suggest that increased screening for prostate ca
ncer, particularly through PSA testing, may have led to declines in mortali
ty from prostate cancer.