Table 2.
Eligibility, Recruitment, and Withdrawals by Year, 2011–2016.
| Year | Eligible | Recruited | Withdrawals |
|---|---|---|---|
| 2011 | 68% | 70% | 21% |
| 2012 | 83% | 86% | 22% |
| 2013 | 85% | 93% | 21% |
| 2014 | 91% | 93% | 13% |
| 2015 | 89% | 90% | 6% |
| 2016 | 85% | 91% | 4% |
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