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DNA yield from standard extraction among 2005 and 2008 DBS samples (n = 84)
| 2005 | 2008 | p -value | |
|---|---|---|---|
|
Samples with insufficient DNA signal (n) |
79.2% (42/53) |
100% (31/31) |
<0.0005 |
| Mean DNA concentration (ng/μL) in extracts [95% CI] | 0.0003068 | 0.000042 | <0.0005 |
