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Table 2.
CFU/cm2 3 days versus 4 days since last cleaning.
| Cleaning delay | N | CFU/cm2, mean ± SD |
|---|---|---|
| 3 day | 115 | 1.6 ± 1.2 |
| 4 day | 107 | 1.8 ± 1.2 |
| p value | – | 0.04 |