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Re: “北美每三个人中,就有一个得癌症”

(2012-02-02 13:12:36) 下一个

Sorry -- can't type in Chinese at work but you are welcome to do so.

All data are based on NIH-NCI Surveillance Research report. They have detailed information regarding SEER (The Surveillance, Epidemiology, and End Results  Program of the National Cancer Institute and the American Cancer Society Cancer) statistics includes Lifetime Risk by cancer site, showing the probability (expressed as a percent) of a person of a specified race, sex, and age (0, 10, 20, 30, 40, 50, or 60) being diagnosed with the specified cancer within the next 10, 20, or 30 years or within their remaining lifetime. Statistical models are used to compute the probability of developing or dying of cancer from birth or conditional on a certain age.

The likelihood of developing cancer during one's lifetime is 1 in 2 for males and 1 in 3 for females, based on 1998-2000 data. It is estimated that approximately 9.6 million people in the U.S. who have had a diagnosis of cancer are alive. Five-year relative survival varies greatly by cancer site and stage at diagnosis, and tends to increase with time since diagnosis. The median age at cancer diagnosis is 68 for men and 65 for women. The 5-year relative survival rate for persons diagnosed with cancer is 62.7%, with variation by cancer site and stage at diagnosis. For patients diagnosed with cancers of the prostate, female breast, corpus uteri, and urinary bladder, the relative survival rate at 8 years is over 75%.

It is interesting that 1) the lifetime risk estimate does not depend on the cancer prevalence adjustment, although this is not the case for age-conditional risk estimates, and 2) the lifetime risk estimate is always smaller when it is corrected for a surgical procedure that takes people out of the risk pool to develop the cancer.

Here are some of the major points when you look at the "Lifetime Risk (Percent) of Being Diagnosed with Cancer by Site and Race/Ethnicity":

For both sexes:
All Sites: all races--41.21%, whites-- 41.56 %, blacks-- 37.24%, asians--35.65%.

Here are some of the major points when you look at the "Lifetime Risk (Percent) of Dying from Cancer by Site and Race/Ethnicity":
For both sexes:
All Sites: all races-- 21.07%, whites-- 21.23%, blacks-- 21.11, asians-- 18.43%.


What are the recent cancer incidence trends in the United States?

Among the 15 most common cancer sites in men, sites with increasing incidence rates during the most recent time period include melanoma of the skin and cancers of the prostate, kidney and renal pelvis (kidney), and esophagus. Among women, incidence rates are increasing for leukemia, non-Hodgkin's lymphoma, melanoma, and cancers of the breast, thyroid, urinary bladder, and kidney. Incidence rates for all childhood cancers combined increased 0.6% per year. Cancer mortality rates have decreased in the United States since 1991 in both men and in women; site-specific death rates have decreased in the most recent time period for 12 of the top 15 cancer sites in men and 9 of the top 15 cancer sites in women.

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林韵 回复 悄悄话 wow, amazing numbers, thx for the info
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