Link con un video de 1 hora en el que se presenta y aborda el sistema de dieta, complementos alimenticios, y cambios de vida no ya como prevención, como en muchos artículos de divulgación general, sino como tratamiento del cancer.
En el video intervienen varios especialistas, y en la página web de la clínica Anderson, apartado "multimedia educational tools", está dividido en varios videos,uno para cada especialista.
VER: http://www3.mdanderson.org/streams/FullVideoPlayer.cfm?xml=publicEd%2Fconfig%2FDiet-Exercise-Ornish--cfg
INFORMACION COMPLEMENTARIA en la web de la Clínica Anderson, poniendo en su buscador: INTEGRATIVE.
jueves, 22 de julio de 2010
jueves, 15 de julio de 2010
What is the point: will screening mammography save my life?-¿ Hacerme una mamografía, puede salvar mi vida..?
REVISTA: BMC Med Inform Decis Mak. 2009 Apr 2;9:18.
AUTOR: Keen JD, Keen JE.
DONDE: Department of Radiology, John H Stroger Jr Hospital of Cook County, 1901 West Harrison Street, Chicago, IL 60612-9985, USA. jkeen@ccbhs.org. USA.
Comment in:
BMC Med Inform Decis Mak. 2009;9:19.
BMC Med Inform Decis Mak. 2009;9:20.
Abstract/RESUMEN
BACKGROUND: We analyzed the claim "mammography saves lives" by calculating the life-saving absolute benefit of screening mammography in reducing breast cancer mortality in women ages 40 to 65.
METHODS: To calculate the absolute benefit, we first estimated the screen-free absolute death risk from breast cancer by adjusting the Surveillance, Epidemiology and End Results Program 15-year cumulative breast cancer mortality to account for the separate effects of screening mammography and improved therapy. We calculated the absolute risk reduction (reduction in absolute death risk), the number needed to screen assuming repeated screening, and the survival percentages without and with screening. We varied the relative risk reduction from 10%-30% based on the randomized trials of screening mammography. We developed additional variations of the absolute risk reduction for a screening intervention, including the average benefit of a single screen, as well as the life-saving proportion among patients with earlier cancer detection.
RESULTS: Because the screen-free absolute death risk is approximately 1% overall but rises with age, the relative risk reduction from repeated screening mammography is about 100 times the absolute risk reduction between the starting ages of 50 and 60. Assuming a base case 20% relative risk reduction, repeated screening starting at age 50 saves about 1.8 (overall range, 0.9-2.7) lives over 15 years for every 1000 women screened. The number needed to screen repeatedly is 1000/1.8, or 570. The survival percentage is 99.12% without and 99.29% with screening.
The average benefit of a single screening mammogram is 0.034%, or 2970 women must be screened once to save one life. Mammography saves 4.3% of screen-detectable cancer patients' lives starting at age 50. This means 23 cancers must be found starting at age 50, or 27 cancers at age 40 and 21 cancers at age 65, to save one life.
CONCLUSION: The life-saving absolute benefit of screening mammography increases with age as the absolute death risk increases. The number of events needed to save one life varies depending on the prospective screening subset or reference class. Less than 5% of women with screen-detectable cancers have their lives saved.
AUTOR: Keen JD, Keen JE.
DONDE: Department of Radiology, John H Stroger Jr Hospital of Cook County, 1901 West Harrison Street, Chicago, IL 60612-9985, USA. jkeen@ccbhs.org. USA.
Comment in:
BMC Med Inform Decis Mak. 2009;9:19.
BMC Med Inform Decis Mak. 2009;9:20.
Abstract/RESUMEN
BACKGROUND: We analyzed the claim "mammography saves lives" by calculating the life-saving absolute benefit of screening mammography in reducing breast cancer mortality in women ages 40 to 65.
METHODS: To calculate the absolute benefit, we first estimated the screen-free absolute death risk from breast cancer by adjusting the Surveillance, Epidemiology and End Results Program 15-year cumulative breast cancer mortality to account for the separate effects of screening mammography and improved therapy. We calculated the absolute risk reduction (reduction in absolute death risk), the number needed to screen assuming repeated screening, and the survival percentages without and with screening. We varied the relative risk reduction from 10%-30% based on the randomized trials of screening mammography. We developed additional variations of the absolute risk reduction for a screening intervention, including the average benefit of a single screen, as well as the life-saving proportion among patients with earlier cancer detection.
RESULTS: Because the screen-free absolute death risk is approximately 1% overall but rises with age, the relative risk reduction from repeated screening mammography is about 100 times the absolute risk reduction between the starting ages of 50 and 60. Assuming a base case 20% relative risk reduction, repeated screening starting at age 50 saves about 1.8 (overall range, 0.9-2.7) lives over 15 years for every 1000 women screened. The number needed to screen repeatedly is 1000/1.8, or 570. The survival percentage is 99.12% without and 99.29% with screening.
The average benefit of a single screening mammogram is 0.034%, or 2970 women must be screened once to save one life. Mammography saves 4.3% of screen-detectable cancer patients' lives starting at age 50. This means 23 cancers must be found starting at age 50, or 27 cancers at age 40 and 21 cancers at age 65, to save one life.
CONCLUSION: The life-saving absolute benefit of screening mammography increases with age as the absolute death risk increases. The number of events needed to save one life varies depending on the prospective screening subset or reference class. Less than 5% of women with screen-detectable cancers have their lives saved.
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