Table 3. K-means cluster analysis using cephalometric principal components with the age factor.

Three cephalometric principal components had been extracted from the principal component analysis, expressed as linear combinations of the FMA-articular angle as component 1, saddle angle-SNB as component 2, and MPH-ANB as component 3.

MPH, Perpendicular distance of the hyoid point from the mandibular plane.

Extraction method, principal component analysis.

Rotation method, Varimax with Kaiser normalization.