Skip to main content
. 2011 Feb 11;116(1):34–38. doi: 10.3109/03009734.2010.528071

Table II.

The percentage of the total number of tests represented by the 10, 20, and 30 most commonly ordered tests.

Year Total number of ordered tests 10 most commonly ordered tests 20 most commonly ordered tests 30 most commonly ordered tests
2002 3,760,508 40.4% 59.5% 67.6%
2003 3,983,149 47.7% 69.7% 78.7%
2004 4,218,082 47.6% 69.1% 77.6%
2005 4,614,524 48.8% 69.3% 77.1%
2006 5,100,550 48.0% 67.4% 75.8%
2007 5,766,947 47.9% 66.7% 76.2%
2008 6,402,617 47.8% 66.4% 75.7%
Mean 4,835,197 46.9% 66.9% 75.5%