Featured Research

from universities, journals, and other organizations

Older Men Treated For Early Prostate Cancer Live Longer Than Those Who Are Not

Date:
December 19, 2006
Source:
University of Pennsylvania School of Medicine
Summary:
Recent findings of an observational study by researchers at the University of Pennsylvania School of Medicine suggest that men between 65-80 years of age who received treatment for early stage, localized prostate cancer lived significantly longer than men who did not receive treatment. The study is published in the Dec. 13 issue of JAMA.

Recent findings from an observational study by researchers at the University of Pennsylvania School of Medicine suggest that men between 65 and 80 years of age who received treatment for early stage, localized prostate cancer lived significantly longer than men who did not receive treatment. The study is published in the December 13th issue of the Journal of the American Medical Association.

Related Articles


Thanks to better cancer prevention education and the resulting wide-spread increase in using prostate-specific antigen (PSA) screenings, more men are being diagnosed with early-stage and low-or intermediate-grade prostate cancer. Studies have shown that the slow-developing nature of prostate cancer during its earliest stages makes treatment options, such as a radical prostatectomy (surgical removal of the prostate) and radiation therapy, controversial with unpredictable outcomes. Often, recently diagnosed men of this group were advised to just "watch and wait" to see how their situation progressed.

"For this study we looked back over the existing data of a large population of prostate cancer patients, aged 65 to 80, with small tumors that were at a low or intermediate risk of spreading," said senior author Katrina Armstrong, MD, MSCE, who worked on the study with colleagues from Penn's Abramson Cancer Center, Center for Clinical Epidemiology and Biostatistics, Leonard Davis Institute of Health and Economics, and Division of Internal Medicine, and Fox Chase Cancer Center. "After accounting for all their differences, we discovered that the men -- who within six months of diagnosis underwent surgery or radiation therapy -- were 31 percent less likely to die than those who did not undergo treatment during that time."

Researchers acquired the necessary data for this study from the Surveillance, Epidemiology, and End Results (SEER) Medicare database, a population-based cancer registry which encompasses approximately 14 percent of the US population. Data was included on 44,630 men, aged 65 to 80, who were diagnosed between 1991-1999, with prostate cancer and had survived more than a year after diagnosis. All patients were followed-up until death or December 31st, 2002, the end of the study. Of the 44,630 men, 32,022 (71.8 percent) were actively treated with either surgery or radiation therapy during the first six months after diagnosis. The remaining group of 12,608 (28.3 percent) were classified as having received "observation" and did not undergo surgery, radiation or hormonal therapy.

During the 12-years of follow-up, researchers found that the patients who received treatment had a 31 percent lower risk of death. In the observation-only group, 37 percent of the patients died whereas only 23.8 percent of those in the treatment group died.

Since this was not a randomized, controlled study but a retrospective analysis of existing data, the researches had to perform extensive statistical adjustments to account for study participants differences. Even with all these differences taken into account, there was still a significant improvement in the overall survival of those men who received active treatment. "This benefit was also seen across the board in all subgroups examined, including African-American men and older men aged 75-80 at diagnosis," added Armstrong. "However, as we summarized in the study, because observational data can never completely adjust for potential selection bias and confounding, our results must be validated by rigorous randomized controlled trials of elderly men with localized prostate cancer before the findings can be used to influence treatment decisions."

This study was funded by the Center for Population Health and Health Disparities at the University of Pennsylvania, Public Health Services Grant P50-CA105641.


Story Source:

The above story is based on materials provided by University of Pennsylvania School of Medicine. Note: Materials may be edited for content and length.


Cite This Page:

University of Pennsylvania School of Medicine. "Older Men Treated For Early Prostate Cancer Live Longer Than Those Who Are Not." ScienceDaily. ScienceDaily, 19 December 2006. <www.sciencedaily.com/releases/2006/12/061212213155.htm>.
University of Pennsylvania School of Medicine. (2006, December 19). Older Men Treated For Early Prostate Cancer Live Longer Than Those Who Are Not. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2006/12/061212213155.htm
University of Pennsylvania School of Medicine. "Older Men Treated For Early Prostate Cancer Live Longer Than Those Who Are Not." ScienceDaily. www.sciencedaily.com/releases/2006/12/061212213155.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) — The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) — Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) — Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) — A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins