Table 5 Factor analysis results using index values

Right tragion to vertex height/HH

.872

.213

− .114

− .067

Head size Ratio

Bitragion arc/HH

.848

.080

.075

.104

Sagittal arc/HH

.790

− .076

.280

− .023

Sagittal arc of head/HH

.705

.262

.282

.242

Sellion to vertex height/HH

− .130

− .929

− .167

.060

Face length Ratio

Menton to glabella/HH

.100

.911

.197

.047

Glabella to stomion/HH

.110

.858

.121

− .053

Bitragion-menton arc/HH

.012

.220

.909

.250

Face width Ratio

Bitragion-subnasale arc/HH

.149

.166

.850

.376

Bitragion breadth/HH

.237

.173

.840

− .063

Tragion to glabella/HH

.033

− .144

.085

.929

Face thickness Ratio

Ectocanthus to tragion/HH

.092

.066

.256

.905

Total

2.727

2.686

2.587

1.974

% of variance

22.726

22.386

21.557

16.452

Cumulative %

22.726

45.112

66.668

83.121