Table 1.

Descriptive summary of study data.

Variables	Mean ± SD/N (%)
Training data
Age (years)	9.31 ± 2.77
Gender (male)	566 (47.44)
Angle classification
Class I	324 (27.16)
Class II division 1	291 (24.39)
Class II division 2	139 (11.65)
Class III	439 (36.80)
Test data
Age (years)	9.74 ± 3.12
Gender (male)	47 (47.00)
Angle classification
Class I	27 (27.00)
Class II division 1	24 (24.00)
Class II division 2	12 (12.00)
Class III	37 (37.00)