Table 2 Comparison of facial swelling among different groups
From: Radiographic grid for locating foreign bodies in maxillofacial emergency trauma
grid group | Non-grid group | ||||||
|---|---|---|---|---|---|---|---|
Affected side(mm) | Healthy side(mm) | Differences | Affected side(mm) | Healthy side(mm) | Differences | P value* | |
2 days postoperatively | 15.3 ± 0.9 | 14.2 ± 0.9 | 1.0 ± 0.4 | 15.7 ± 0.8 | 14.4 ± 0.7 | 1.3 ± 0.3 | 0.047 |
7 days postoperatively | 14.9 ± 0.8 | 14.2 ± 0.9 | 0.8 ± 0.3 | 15.4 ± 0.8 | 14.4 ± 0.7 | 1.0 ± 0.3 | 0.190 |
P value+ | 0.005 | 0.678 | 0.008 | 0.000 | 1.000 | 0.001 | |