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Fusion rate of the two groups
| Grading | Isobar TTL (n = 20) | Rigid (n = 42) | P |
|---|---|---|---|
| Fusion | 19 | 40 | |
| Possible fusion | 1 | 2 | |
| Nonfusion | 0 | 0 | |
| Fusion rate (%) | 95.00 | 95.20 | 1.000 |
P values are based on the χ2 test, P < 0.05 indicates a statistically significant difference
