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Rate of congruence between duplex ultrasound and biopsy result
| Month/year | Counts | Fractions of total (%) | ||||
|---|---|---|---|---|---|---|
| Congruent | Equivocal | Discordant | Congruent | Equivocal | Discordant | |
| August 2008–July 2009 | 21 | 2 | 6 | 72 | 7 | 21 |
| August 2009–July 2010 | 13 | 1 | 3 | 76 | 6 | 18 |
| August 2010–July 2011 | 8 | 4 | 2 | 57 | 29 | 14 |
| Total/average | 42 | 7 | 11 | 70 | 12 | 18 |
