Table 6 Canonical discriminate coefficients, percentages of correct group membership and cross validation of craniometric measurements of the studied Egyptian population (n=367)
From: Sexual dimorphism of foramen magnum: An Egyptian study
Variables | Coefficient | Fisher's linear DF | Fisher's linear DF | Group centroid | Group centroid | Corrected prediction rates (%) | Corrected prediction rates after cross – validation (%) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Male | Female | Male | Female | Male | Female | Mean | Male | Female | Mean | ||
Univaraite analysis | |||||||||||
ROCW constant | 7.265 -8.222 | 61.173 -36.144 | 58.586 -33.209 | .198 | -.158 | 54.0 | 64.7 | 59.9 | 54.0 | 64.7 | 59.9 |
ROCL constant | 4.060 -8.004 | 34.255-36.293 | 31.085 -30.007 | .434 | -.347 | 63.2 | 69.1 | 66.5 | 63.2 | 69.1 | 66.5 |
LOCL constant | 4.401 -8.867 | 40.100 -42.194 | 38.175 -38.304 | .243 | -.194 | 62.0 | 63.7 | 62.9 | 62.0 | 63.7 | 62.9 |
MnICD c | 1.554 -2.246 | 3.728 -3.572 | 3.299 -2.948 | .154 | -.122 | 48.1 | 64.2 | 57.1 | 48.1 | 64.2 | 57.1 |
MBD constant | 1.845 -5.169 | 9.862 -14.973 | 9.279 -13.335 | .176 | -.140 | 52.8 | 64.7 | 59.4 | 52.8 | 64.7 | 59.4 |
FMW constant | 3.778 -11.554 | 44.880 -71.271 | 42.647 -64.422 | .327 | -.264 | 60.7 | 67.8 | 64.7 | 60.7 | 67.8 | 64.7 |
FML constant | 2.995 -10.846 | 33.026 -61.500 | 32.040 -57.926 | .182 | -.147 | 57.1 | 61.4 | 59.5 | 57.1 | 61.4 | 59.5 |
Multivariate analysis | |||||||||||
ROCW | .141 | 9.232 | 8.218 | .550 | -.441 | 59.3 | 80.2 | 70.9 | 58.0 | 77.7 | 69 |
ROCL | .609 | 12.847 | 10.404 | ||||||||
LOCL | .222 | 21.325 | 20.360 | ||||||||
MnICD | .194 | 1.762 | 1.465 | ||||||||
MBD | -.038 | 4.196 | 4.265 | ||||||||
FMW | .463 | 20.654 | 18.921 | ||||||||
FML | .080 | 25.405 | 25.167 | ||||||||
Constant | -11.393 | -153.655 | -142.099 | ||||||||