Table 6.
Age groups | Number of subjects | Anterior surfaces (Avg±SD) | Posterior surfaces (Avg±SD) | t‐test (P value) |
---|---|---|---|---|
18–27 | 163 | 1.07±0.36 | 1.26±0.28 | 0.0001* |
28–37 | 117 | 1.08±0.36 | 1.30±0.31 | 0.0001* |
38–47 | 66 | 1.11±0.37 | 1.37±0.30 | 0.0001* |
48+ | 32 | 1.14±0.36 | 1.4±0.32 | 0.0001* |
Entire population | 378 | 1.09±0.36 | 1.30±0.30 | 0.0001* |
Avg, average; SD, standard deviation.
Statistically significant differences.