Table 2 |
|
|
General interpretations of PCA and FA loadings. |
|
|
Pattern |
General interpretation of loadings |
|
|
|
|
PCA |
|
|
PC1 |
all maxillary teeth and mandibular premolars and molars |
|
PC2 |
molars vs. non-molars |
|
PC3 |
premolars vs. non-premolars |
|
PC4 |
mandibular teeth vs. maxillary teeth |
|
PC5 |
2nd molars vs. mandibular 1st molars |
|
PC6 |
mandibular premolars and 2nd molars vs. mandibular 1st molar and maxillary molars and 2nd premolar |
|
PC7 |
maxillary premolars and mandibular molars vs. maxillary molars and mandibular premolars |
|
PC8 |
complex contributions |
|
PC9 |
complex contributions |
|
PC10 |
right vs. left mandibular molars |
|
FA |
|
|
FAC1 |
posterior teeth: premolars and molars |
|
FAC2 |
maxillary anterior teeth: incisors and canines |
|
FAC3 |
mandibular canines and premolars |
|
FAC4 |
maxillary premolars |
|
FAC5 |
mandibular incisors and canines |
|
FAC6 |
non-occlusal premolar and molar surfaces, maxillary lateral incisors, and maxillary canines |
|
FAC7 |
tooth 20 (left mandibular 2nd premolar) |
|
FAC8 |
tooth 29 (right mandibular 2nd premolar) |
|
FAC9 |
maxillary 2nd molars |
|
FAC10 |
tooth 13 (left maxillary 2nd premolar) |
|
|
|
|
See Additional file 1 for full details |
|
|
Shaffer et al. BMC Oral Health 2012 12:7 doi:10.1186/1472-6831-12-7 |
|
