Navigation Links
Study reveals inaccuracies in studies of cancer treatment
Date:4/20/2008

k of death from prostate cancer than men who did not receive the therapy.

Dr. Giordano and her team next re-analyzed data from a previously published study of more than 43,000 men with localized prostate cancer who were treated compared with men who were not treated. Like the original study, the researchers analysis revealed that men who were treated for prostate cancer experienced lower mortality rates. However, they also found that in many cases, the cause of death was due to something other than prostate cancer, such as diabetes or pneumonia.

Finally, the investigators re-analyzed data from a previously published study on the effects of fluorouracil-based chemotherapy for colon cancer. They came to the same conclusion as the original research studythat chemotherapy for node positive colon cancer is associated with improved survival. However, they found that the link between the treatment and survival was strongest for non-cancer deaths, which presumably are not related.

The authors attributed the improbable results found in their three analyses to selection biases when patients are treated. For example, selection bias occurs when patients with poorer prognoses are more likely to receive a more efficacious drug, or when patients with better underlying health are more likely to receive a more toxic treatment because they are more likely to tolerate it.

The authors concluded that their findings suggest that the results of observational studies of treatment outcomes should be viewed with caution. They recommended that analyses of observational data should at a minimum attempt to segregate patient outcomes into those that could possibly be due to the treatments vs. those that could not. Many observational studies on cancer treatments only report death rates from all causes and do not specify cancer-related deaths.


'/>"/>

Contact: David Sampson
david.sampson@cancer.org
American Cancer Society
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Obesity, inactivity as common among cancer survivors as rest of Canadians, study shows
2. Choices Sap Your Stamina, Self Control: Study
3. Study finds patients overestimate cancer screening history
4. Parents stricter with older kids to set example: game theory study
5. Study finds 1 in 5 Iraq and Afghanistan veterans suffer from PTSD or major depression
6. RIT study: Sign language interpreters at high ergonomic risk
7. U-M study: Work hassles hamper sleep
8. Study provides new understanding of forces behind seasonal flu virus evolution
9. Seasonal Flu Outbreaks Start in Asia: Study
10. Study examines the effect of epilepsy on the aging
11. Study shows pine bark naturally reduces osteoarthritis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... (PRWEB) January 22, 2015 The City of West ... 10 a.m., to commemorate the 42nd anniversary of the Supreme Court ... , “It’s been 42 years since the Roe vs. Wade decision ... still as present as ever,” said City of West Hollywood Councilmember ...
(Date:1/22/2015)... (PRWEB) January 23, 2015 VogueQueen is a ... affordable prices and many designers are thrilled to have it ... business announces its new collection of prom dresses for the ... to drive the strategic vision and he focuses on continuing ...
(Date:1/22/2015)... the premier women’s dress supplier, has recently released its ... of AngelWeddingDress.com to find more details. , Many ... a bridal party. AngelWeddingDress offers a variety of gorgeous ... wedding dresses are specially designed for 2015. , AngelWeddingDress ...
(Date:1/22/2015)... New York, New York (PRWEB) January 22, 2015 ... filed after Fresenius Medical Care recalled its GranuFlo ... the federal multidistrict litigation underway in U.S. District Court, ... an Order dated January 20th, the Court has remanded ...
(Date:1/22/2015)... Plainsboro, NJ (PRWEB) January 22, 2015 ... advocate and keynote speaker at the upcoming 32nd ... by ACCME-accredited Physicians’ Education Resource®, LLC (PER®) , ... breast would have gone undetected if she had not ...
Breaking Medicine News(10 mins):Health News:VogueQueen Unveils New Designs of Prom Dresses for 2015 2Health News:AngelWeddingDress Has Recently Released Its Collection Of 2015 Maternity Wedding Dresses 2Health News:Court Overseeing Federal GranuFlo Lawsuits Remands Louisiana Claim Back to State Court, Bernstein Liebhard LLP Reports 2Health News:Court Overseeing Federal GranuFlo Lawsuits Remands Louisiana Claim Back to State Court, Bernstein Liebhard LLP Reports 3Health News:Court Overseeing Federal GranuFlo Lawsuits Remands Louisiana Claim Back to State Court, Bernstein Liebhard LLP Reports 4Health News:Joan Lunden Reveals Diagnostic Approach That Led To Early Detection;To Keynote 32nd Annual Miami Breast Cancer Conference® 2Health News:Joan Lunden Reveals Diagnostic Approach That Led To Early Detection;To Keynote 32nd Annual Miami Breast Cancer Conference® 3Health News:Joan Lunden Reveals Diagnostic Approach That Led To Early Detection;To Keynote 32nd Annual Miami Breast Cancer Conference® 4Health News:Joan Lunden Reveals Diagnostic Approach That Led To Early Detection;To Keynote 32nd Annual Miami Breast Cancer Conference® 5Health News:Joan Lunden Reveals Diagnostic Approach That Led To Early Detection;To Keynote 32nd Annual Miami Breast Cancer Conference® 6
... University of Texas at Austin,s new Health Information Technology ... the Professional University Resources and Education for Health Information ... from the U.S. Department of Health and Human Services ... Technology. The program graduated its first class of ...
... of the most spectacular migrations on Earth is that of ... Acknowledged as one of the wonders of the natural world, ... five-kilometre breeding migration. Now, scientists have discovered the key to ... a team led by the late Professor Steve Morris from ...
... with bacterial pneumonia decreased by a fifth in the two ... disease, according to a new study published today in the ... illness caused by Streptococcus pneumoniae bacteria that mostly ... one in ten deaths in the under-fives is caused by ...
... HealthDay Reporter , THURSDAY, Aug. 26 (HealthDay News) ... as likely as their religious counterparts to make medical choices ... a new British study reveals. "The religious beliefs of ... concludes study author Clive Seale, a professor of medical sociology ...
... By Dennis Thompson HealthDay Reporter , ... a chronic illness that challenges you every single day. ... sometimes suffer from surprising decreases in energy. You take ... procedures to keep the illness from progressing. The ...
... Compliance with practice guideline-recommended treatment for cirrhosis is ... hemorrhage (EVH; bleeding), according to a new study ... official journal of the American Gastroenterological Association (AGA) ... liver is permanently scarred or injured. "Esophageal ...
Cached Medicine News:Health News:Health IT program at the University of Texas at Austin receives $2.7 million in federal funding 2Health News:Health IT program at the University of Texas at Austin receives $2.7 million in federal funding 3Health News:Scientists discover key to Christmas Island's red crab migration 2Health News:Vaccine has cut child cases of bacterial pneumonia, says study 2Health News:Vaccine has cut child cases of bacterial pneumonia, says study 3Health News:Doctors' Religious Beliefs Can Color Their Care of Terminally Ill 2Health News:Doctors' Religious Beliefs Can Color Their Care of Terminally Ill 3Health News:Doctors' Religious Beliefs Can Color Their Care of Terminally Ill 4Health News:Does Hope Have a Dark Side? 2Health News:Does Hope Have a Dark Side? 3Health News:Adherence to practice guidelines may reduce bleeding in cirrhosis patients 2
(Date:1/22/2015)... UPI ), a medical device company that develops, manufactures ... today reported financial results for the fiscal 2015 third ... the Company,s Urgent ®  PC Neuromodulation System grew 14.5% ... compared to $3.9 million in the third quarter of ...
(Date:1/22/2015)... 2015 /PRNewswire/ - Pivotal Therapeutics Inc. (OTCQX:PVTTF; CSE:PVO), ("Pivotal" or the ... therapies for cardiovascular disease and overall health is pleased to ... 2014 and its outlook for 2015 from the CEO, Mr. ... We would like to take this opportunity to share ...
(Date:1/22/2015)... 22, 2015  Bio-Techne Corporation (NASDAQ: TECH ) ... member of the new Simple Plex platform through its ... represents the re-branding of the previously acquired CyPlex instrument ... is a transformative immunoassay technology which integrates an innovatively ...
Breaking Medicine Technology:Uroplasty Reports Record Revenue in Fiscal Third Quarter 2Uroplasty Reports Record Revenue in Fiscal Third Quarter 3Uroplasty Reports Record Revenue in Fiscal Third Quarter 4Uroplasty Reports Record Revenue in Fiscal Third Quarter 5Uroplasty Reports Record Revenue in Fiscal Third Quarter 6Uroplasty Reports Record Revenue in Fiscal Third Quarter 7Uroplasty Reports Record Revenue in Fiscal Third Quarter 8Uroplasty Reports Record Revenue in Fiscal Third Quarter 9Uroplasty Reports Record Revenue in Fiscal Third Quarter 10Uroplasty Reports Record Revenue in Fiscal Third Quarter 11Uroplasty Reports Record Revenue in Fiscal Third Quarter 12Uroplasty Reports Record Revenue in Fiscal Third Quarter 13Uroplasty Reports Record Revenue in Fiscal Third Quarter 14Uroplasty Reports Record Revenue in Fiscal Third Quarter 15Uroplasty Reports Record Revenue in Fiscal Third Quarter 16Uroplasty Reports Record Revenue in Fiscal Third Quarter 17Uroplasty Reports Record Revenue in Fiscal Third Quarter 18Pivotal Therapeutics: Year in Review and CEO Update 2Pivotal Therapeutics: Year in Review and CEO Update 3Pivotal Therapeutics: Year in Review and CEO Update 4Pivotal Therapeutics: Year in Review and CEO Update 5Pivotal Therapeutics: Year in Review and CEO Update 6Pivotal Therapeutics: Year in Review and CEO Update 7Bio-Techne Launches Simple Plex Platform 2Bio-Techne Launches Simple Plex Platform 3
... 31 A recent outbreak of MRSA,(Methicillin- resistant ... should cause organizations and facilities nationwide to,reevaluate and ... is resistant to common antibiotics. It manifests its,symptoms ... other pus-filled,lesions. Superbug infections prior to 2007 were ...
... United,Therapeutics Corporation (Nasdaq: UTHR ) and its ... will release the results of their,TRIUMPH-1 Phase 3 ... pulmonary arterial hypertension (PAH) before market open on ... its previously scheduled conference,call on November 1, 2007, ...
Cached Medicine Technology:'Superbug' Outbreak Calls for Immediate Increased Attention on Infection Control 2Results of TRIUMPH-1 Trial of Viveta in Pulmonary Arterial Hypertension to Be Announced Before Market Open on Thursday, November 1, 2007 2
Its generous filter placement, MicroPoint design, and reference marks at 10, 50, and 100 ul make this ART tip ideal for many 200 ul pipettors....
... microfuge tubes and PCR tubes. Certified ... and DNase-free. Tubes have a positive ... Available in a variety of sizes. ... low binding surface. PCR Tubes are ...
Designed for the Eppendorf and Pipetman 100 ul pipettors, this tip features MicroPoint design, reference mark at 10 ul and a yellow tip design for the most universal fit....
Diamond Filter Tips play a critical role in preventing aerosol-borne contamination. Also available sterilized (no need to autoclave) and certified free of detectable RNase, DNase, DNA, RNA, and prote...
Medicine Products: