updated 6/30/2009 2:26:37 PM ET 2009-06-30T18:26:37

Irregular heartbeat. Prostate cancer. Back pain. Hearing loss. The government is about to spend millions to try to uncover the best treatments for scores of ailments, and how to handle these four major ones leads a list of top 100 questions that doctors need answered.

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One of medicine's secrets: Doctors often have to guess at which treatment or test is best for a certain patient. There is very little good scientific evidence that compares them. As part of the economic stimulus package, Congress set aside a down payment of $1.1 billion to start figuring that out, so patients do not waste time and money on poor choices.

But where to start? Tuesday, the prestigious Institute of Medicine delivered a blueprint showing the top 100 priorities to study first.

"This program is a program about improving decisions for patients," said Dr. Harold Sox of the American College of Physicians, who co-chaired the IOM report.

Some of the questions may surprise patients and families. High on the list:

  • Is medication or a surgical fix better for the irregular heartbeat called atrial fibrillation that afflicts 2 million Americans?
  • What is best for early-stage prostate cancer, various surgeries, different types of radiation, so-called watchful waiting?
  • What are the pros and cons of new hearing aids, cochlear implants and other devices for age-related hearing loss?
  • How effective are numerous ADHD interventions — medications, cognitive-behavioral therapy, biofeedback, parent training?
  • When should cancer patients have an MRI, a CT scan or PET scan, and when are the scans a waste?
  • Which of myriad treatments, from anti-inflammatories to exercises, are best for low back pain?

The IOM did not stop at the doctor's office but considered ways of preventing health problems, too. So the report also urges comparing how schools can help fight childhood obesity, from meal programs to physical education to restricting vending machines. And since half of all pregnancies are unplanned, the report specifies testing novel strategies like over-the-counter access to birth control pills.

At issue is what is called "comparative effectiveness," and these winners-and-losers questions motivate fierce opposition from drug makers and others who have a financial stake in the outcome. That kind of lobbying has left the nation with a scattershot method for determining best medical practices.

The IOM panel was clear: The new program is not about rationing care; it does not call for insurers to use the results for coverage decisions but about finding unbiased information to make the best choices for a given patient. To do that, the research must include typical patients, usually sicker ones than drug companies enroll in the studies required for sales approval, the report stressed.

"Patients, even doctors like me, somehow get tongue-tied when it comes time to ask questions of their doctor," Sox said. Eventually, these studies should arm patients with the information to "speak up and really assert themselves in talking with their doctor, to be sure their preferences are reflected in whatever treatment or testing is eventually decided on."

The report did not put a price tag on the called-for studies, but that $1.1 billion will cover only a fraction of the projects. Nor is it clear how quickly the answers will arrive.

Obama administration officials have stressed that quickly disseminating the research results also will be a priority, so the data would translate into better care.

Copyright 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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