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Age distribution of the sample
| Number (%) | Age (mean ± SD) | ||
|---|---|---|---|
| Total sample | 1039 (100) | 28.11 (7.25) | |
| Impaction group | Male | 222 (52.6) | 26.58 (6.60) |
| Female | 200 (47.4) | 26.77 (6.74) | |
| Subtotal | 422 (40.5) | 26.67 (6.65) | |
| Control group | Male | 314 (50.9) | 29.46 (7.63) |
| Female | 303 (49.1) | 30.1 (7.44) | |
| Subtotal | 617 (59.5) | 29.75 (7.55) |
Abbreviation: SD, standard deviation.
