Table 1.
Radiographic Measurements
| Non-pneumatized petrous apex | Pneumatized petrous apex | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Measurement | Mean | Minimum | Maximum | Standard deviation | 95 % Confidence interval of mean | Mean | Minimum | Maximum | Standard deviation | 95% Confidence interval of mean |
| Height | 7.2 | 4.8 | 10.2 | 1.3 | 6.8 - 7.6 | 7.6 | 5.5 | 11.3 | 1.3 | 7.2 – 8.0 |
| Width | 9.5 | 5.0 | 15.4 | 2.6 | 8.7 – 10.3 | 10.1 | 5.5 | 15.3 | 3.1 | 9.1 – 11.1 |
| Width at equator | 6.7 | 3.0 | 14.0 | 3.0 | 5.7 – 7.6 | 7.5 | 14.5 | 3.1 | 3.3 | 6.4 – 8.6 |
| Diameter circle | 5.1 | 2.8 | 9.3 | 1.2 | 4.7 – 5.5 | 5.7 | 3.1 | 9.4 | 1.7 | 5.1 – 6.3 |
| Area circle mm2 | 21.5 | 6.1 | 67.3 | 10.9 | 18.1 – 24.9 | 27.8 | 7.4 | 69.0 | 16.4 | 22.2 – 33.4 |
| Depth | 17.4 | 1.7 | 23.0 | 3.3 | 16.4 – 18.4 | 18.6 | 14.3 | 23.8 | 2.4 | 17.8 – 19.4 |