Table 2.
Variables assessed in the sample (n = 24).
| Variable | Mean | SD | SE | CI 95% | |
|---|---|---|---|---|---|
| Lower limit | Upper limit | ||||
| Mastoid area | |||||
| RE | 304.9 | 143.4 | 29.3 | 244.4 | 365.5 |
| LE | 304.4 | 130.7 | 26.7 | 249.2 | 359.6 |
| Mastoid volume | |||||
| RE | 33.4 | 18.6 | 3.8 | 25.6 | 41.3 |
| E | 32.8 | 16.0 | 3.3 | 26.0 | 39.6 |
| Area/volume ratio | |||||
| RE | 9.6 | 1.9 | 0.4 | 8.8 | 10.4 |
| LE | 9.6 | 1.8 | 0.4 | 8.8 | 10.4 |
| Area difference | |||||
| Absolute value | 43.0 | 29.1 | 5.9 | 30.7 | 55.3 |
| Right - Left | 0.5 | 52.7 | 10.8 | -21.7 | 22.8 |
| Variation (%) | -0.9 | 17.8 | 3.6 | -8.5 | 6.6 |
| Volume difference | |||||
| Absolute value | 6.3 | 5.3 | 1.1 | 4.0 | 8.5 |
| Right - Left | 0.6 | 8.3 | 1.7 | -2.9 | 4.1 |
| Variation (%) | -1.0 | 21.8 | 4.5 | -10.2 | 8.3 |
SD: Standard deviation; SE: Standard error; CI: Confidence interval.