June 2, 2010 |
Today's teenagers are increasingly likely to use the rhythm method to prevent pregnancy and to have relaxed attitudes about unwed motherhood, according to a new government sex survey. The results, released Wednesday by the National Center for Health Statistics, found that 17% of 15- to 19-year-olds used periodic abstinence, or the calendar rhythm method, as a form of contraception in the period from 2006 to 2008. In 2002, 11% of teens used that method. "That was pretty much a surprise," said Joyce Abma, lead author of the study and a demographer with the center.
October 22, 2007 |
Last week, the Food and Drug Administration and heart device maker Medtronic told doctors to stop using a particular component -- the wire lead -- of Medtronic's latest generation of implanted heart defibrillators. Cardiologist Dr. William Maisel, a consultant to the FDA, explains what these devices do and what went wrong. What are these implantable heart devices? Implantable heart devices come in two types. The more common device, a pacemaker, is designed for hearts that beat too slowly.
December 21, 2005 |
A national physicians group is leading an effort in Congress to halt annual competency tests of doctors and laboratory technicians who read Pap smears, even as the results of the first such test indicate significant problems with the way the slides are interpreted. Legislation to place a moratorium of at least one year on the proficiency exams recently passed the House and is now before the Senate. It is supported by the College of American Pathologists, which accredits laboratories nationwide.
August 7, 2005 |
Eighty-six Squared has never been in a hurry. The Black Angus bull was born 15 years after cells from his genetic donor, Bull 86, were frozen as part of a study on natural disease resistance. When Bull 86 died in 1997, scientists thought his unique genetic makeup had been lost. But researchers at Texas A&M University were able to clone him from the frozen cells in 2000. Now 5 years old, 86 Squared spends his days grazing on a rural area of the A&M campus.
October 15, 2003 |
IBM Corp. employees knew the company's computer disk drives had a higher failure rate than the company had acknowledged, according to court papers. In courtroom testimony in August in Alameda, Calif., lawyers representing customers suing the company presented e-mail messages showing IBM employees discussing failure rates far higher than the company claims. "Do you mean to tell me we're shipping drives for distribution with knowing defects of 17%?"
CALIFORNIA | LOCAL
June 14, 2003 |
California's high school exit exam, once heralded as a sure-fire way to ratchet up achievement and make a diploma worthwhile, will be postponed amid concerns about high failure rates and the political and legal backlash from denying thousands of students the right to graduate next year. A majority of the members of the California Board of Education said they would vote next month to delay what was one of Gov. Gray Davis' central education reforms.