| National Program of Cancer Registries |
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NPCR Participation in the CONCORD Study
In 2000, 12 state registries that are part of the CDC's National
Program of Cancer Registries (NPCR) began participating in Phase I of the
CONCORD Studyan international collaborative project designed to obtain
comparable estimates of cancer survival in Europe and North America. Data
from 47 population-based cancer registries are being used in this study.
These 12 NPCR registries are currently linking data for breast,
prostate, and colorectal cancer incidence cases diagnosed between 1990 and
1994 with data from the National Death Index (from the National Center for
Health Statistics) in order to obtain vital statistics information for
cancer patients through 1999.
In 2001, CDC also funded eight NPCR registries to participate in Phase
II of the CONCORD Study. During Phase II, detailed clinical data will be
extracted from medical records for a random sample of breast, prostate,
and colorectal cancer patients diagnosed in 1997 and having a 3-year
follow-up period. The goal of this study is to determine the extent to
which differences in stage at diagnosis and treatment account for regional
and international differences in survival.
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