Table 1.
Year | No. of Laboratories Enrolled | No. of Laboratories Responding | Response Rate, % |
---|---|---|---|
2006 | 76 | 70 | 92 |
2007 | 128 | 122 | 95 |
2008 | 76 | 73 | 96 |
2009 (Distribution 1) | 179 | 175 | 98 |
2009 (Distribution 2) | 209 | 189 | 90 |
2010 | 146 | 129 | 88 |
2011 | 185 | 159 | 86 |