Table 4. Anatomical Shape Changes.

Shape changes across principal component axes. Descriptions correspond to Figure 4. for facial shape after removing variation related to age and size

Tanzanian		Caucasian
PC	Shape Change Across Principal Component Axis	PC	Shape Change Across Principal Component Axis
PC1	Facial Height, Facial Width, Interorbital Distance	PC1	Facial Height, Facial Width, Philtrum Height, Chin Protrusion
PC2	Facial Height, Maxillary Prognathism, Facial Width	PC2	Maxillary Prognathism, Chin Protrusion, Nasal Projection
PC3	Facial Width, Upper Facial Depth	PC3	Retrognathia, Nasal Projection, Interorbital Distance
PC4	Facial Height, Maxillary Prognathism, Chin Protrusion	PC4	Nasal Width, Philtrum Length, Maxillary Retrognathism
PC5	Facial Height, Nasal Tip Projection, Width of Mouth	PC5	Nasal Tip Projection, Nasal Width, Philtrum Length and Width
PC6	Nasal Cavity Width, Maxillary Prognathism	PC6	Facial Width, Facial Height, Zygomatic Projection
PC7	Width of Mouth, Facial Prognathism	PC7	Nasal Width, Width of Mouth, Zygomatic Projection
PC8	Zygomatic Projection	PC8	Facial Width, Zygomatic Projection, Interorbital Distance
PC9	Maxillary Prognathism, Upper Facial Height, Nostril Width	PC9	Width of Mouth, Nasal Width, Retrognathia
PC10	Length of Chin, Nasion Positioning	PC10	Maxillary Retrusion, Philtrum Width, Nasal Width