- | Class I | Class II | Class III | Normal | Total |
---|---|---|---|---|---|
Female | 181 (54.4%) | 67 (20.1%) | 20 (6%) | 65 (19.5%) | 333 (100%) |
Male | 107 (56.9%) | 43 (22.9%) | 10 (5.3%) | 28 (14.9%) | 188 (100%) |
Mean age (SD) | 16.18 (1.8) y | 15.73 (1.8) y | 15.83 (1.9) y | 16.55 (1.6) y | - |