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Table 1 Results of regression analysis to predict annual change in mandibular length

From: Predicting changes in mandibular length and total anterior facial height using IGF-1, cervical stage, skeletal classification, and gender

Independent variables Parameter estimate Error p value
Intercept −4.27893 6.06406 0.48
Average IGF-1 in μg/L 0.01203 0.00479 0.02
IGF-1 change in μg/L 0.00864 0.00316 0.01
Initial mandibular length in mm 0.02822 0.06394 0.66
Male gender (female is the reference group) 0.91686 0.75568 0.23
Skeletal class I (reference group) Reference - -
Skeletal class II −0.26483 0.79831 0.74
Skeletal class III 3.08272 1.06271 0.006
Cervical group A 0.16312 0.86144 0.85
Cervical group B 1.73768 1.10008 0.1235
Cervical group C (reference group) Reference - -
  1. R-square: 0.5215. p value for the model: 0.0007.