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.
Educational institutions. How many educational institutions exist in the United States? During most of the last century, the trend of consolidating small schools brought declines in the total number of public schools in the United States. In 192930, there were approximately 248,000 public schools, compared with about 98,000 in 201314. However, the number of public schools has increased in recent decades.