Table 1 Accuracy parameters of the experimental group and the control group (means ± standard)
Group (n) | Entry point error (mm) | Exit point error (mm) | Angle error (°) |
|---|---|---|---|
Experimental group (n = 10) | 0.78 ± 0.34 | 0.80 ± 0.25 | 1.33 ± 0.41 |
Control group (n = 20) | 0.81 ± 0.24 | 0.86 ± 0.32 | 1.71 ± 0.71 |
P value | 0.74 | 0.62 | 0.14 |