1 Stool tests can produce false-positive and false-negative results. 2  False-positive means that the test may be positive when you don't have a polyp or cancer. 3  False-negative means that the test may be negative when you do have a polyp or cancer.4  These tests may miss polyps and some cancers.hat To Think About. 1  Stool tests can produce false-positive and false-negative results. 2  False-positive means that the test may be positive when you don't have a polyp or cancer. 3  False-negative means that the test may be negative when you do have a polyp or cancer.
Approximately 11,000 spinal cord injuries reported each year in the United States involve paraplegia. Such events occur as a result of automobile and motorcycle accidents, sporting accidents, falls, and gunshot wounds.
to 911 emergencies. The number of licensed EMS agencies per State ranges from 7 to 1,555, with a median of 249 EMS agencies per State and an average of 7.0 EMS agencies per county. With data available from 49 of 50 States, it is esti-mated that there are 21,283 EMS agencies in the United States. Figure 1 shows the number of licensed EMS agen-