Table 3. Frequency of abnormal maxillary sinuses: Group.
| Group | Abnormal | Normal | Overall | (%) All Abnormal |
|---|---|---|---|---|
| A | 18 | 11 | 29 | 62.10 |
| B | 160 | 93 | 253 | 63.20 |
| C | 279 | 201 | 480 | 58.10 |
| Overall | 457 | 305 | 762 | 59.97 |
χ2 = 1.86 (p = 0.3942).
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