Table 3.

Factor loading of morphology characteristics by varimax rotation

Measurement	Factor 1	Factor 2	Factor 3	Factor 4	Factor 5
SNA	0.002	0.909	− 0.077	0.234	0.087
SNB	− 0.111	0.851	− 0.291	− 0.262	0.187
ANB	0.209	− 0.095	0.400	0.826	− 0.200
Mx1-SN	0.089	0.163	− 0.078	0.025	0.957
Md1-MP	− 0.281	− 0.089	0.858	0.105	0.050
Angle of axis of upper and lower central incisor	− 0.158	0.372	− 0.453	− 0.271	− 0.700
FMA	0.538	− 0.592	− 0.242	0.349	0.240
GoGn-SN	0.512	− 0.743	− 0.126	0.319	0.090
N-Me	0.927	− 0.058	0.178	− 0.154	− 0.009
ANS-Me	0.979	− 0.089	0.022	0.037	0.113
Go-S	0.279	0.657	0.364	− 0.406	− 0.142
Go-Ar	0.330	0.598	0.345	− 0.393	− 0.275
Overbite	− 0.620	0.441	− 0.150	0.009	− 0.358
Overjet	− 0.105	− 0.143	− 0.105	0.683	0.265
U1-PP	0.766	− 0.162	− 0.248	0.060	− 0.145
L1-MP	0.702	0.152	0.448	0.206	0.125
U6-PP	0.862	0.113	− 0.011	− 0.043	0.068
L6-MP	0.526	0.118	0.743	− 0.111	0.003

The standardized factor loadings of factor 1 to factor 5 are as follows: 0.51, 0.59, 0.74, 0.68, 0.70. Measurements with strong correlation were extracted and displayed in a bold font