Table 1. Mean, standard deviation (SD) and p value for each measurement at T1 (initial examination) and T2 (11.5 years later).
| T1 | T2 | T2 – T1 | p value | |
|---|---|---|---|---|
| Mean (SD) | Mean (SD) | X dif | (paired t-test) | |
| LI | 4.64 (1.81) | 5.65 (2.00) | 1.01 | <0.0001** |
| RHL | 32.37 (1.86) | 31.86 (1.88) | -0.51 | <0.001** |
| LHL | 32.47 (1.93) | 31.70 (2.09) | -0.77 | <0.0001** |
| IcW | 25.55 (1.52) | 25.12 (1.74) | -0.43 | 0.0089** |
| ImW | 44.83 (2.72) | 44.40 (2.87) | -0.43 | 0.0022** |
LI = Little's index; RHL = Right hemiarch length; LHL = Left hemiarch length; IcW = Intercanine width; ImW = Intermolar width.