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Analysis of results showing a significant difference in outcome according to the size of the original defect, using a cut point of 2.8 cm
| Group | >2.8 cm | ≤2.8 cm | Total |
|---|---|---|---|
| Satisfactory results | 0 | 13 | 13 |
| Unsatisfactory results | 5 | 0 | 5 |
| Total | 5 | 13 | 18 |
χ2=4.24, P=0.04
