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Table 2 Regression results

From: Experimental determination of three-dimensional cervical joint mobility in the avian neck

Joint Rotation Variable Coefficient St. Err. T value p-value Adj. r2 p-value
Cranial axial rotation excursion PC1 PC2 PC3 −5.8268 7.971 −6.5223 0.4825 0.7522 1.4763 −12.076 10.597 −4.418 <.001 <.001 <.001 0.9093 <.001
lateroflexion excursion PC1 PC2 −1.4410 6.112 0.6853 1.1422 −2.103 5.351 0.0449 <.001 0.5041 <.001
dorsoventral excursion PC2 −1.6532 0.8461 −1.954 0.0608 0.0886 0.06078
mean dorsoventral flexion PC1 PC2 PC3 6.6402 −5.8441 6.4364 0.6137 0.9567 1.8777 10.820 −6.108 3.428 <.001 <.001 0.0020 0.8627 <.001
Caudal axial rotation excursion PC1 PC2 PC3 −4.1545 7.6497 4.3237 0.8023 1.1911 2.2359 −5.178 6.422 1.934 <.001 <.001 0.0641 0.7681 <.001
lateroflexion excursion PC2 PC3 4.30274 3.955 1.3482 2.422 3.192 1.633 0.0037 0.1141 0.2957 0.003358
dorsoventral excursion PC3 −2.854 1.585 −1.801 0.0825 0.0718 0.08246
mean dorsoventral flexion PC1 PC2 PC3 4.9342 −7.6029 2.2219 0.5378 0.7984 1.4988 9.174 −9.522 1.482 <.001 <.001 .15 0.9025 <.001
  1. Results of regressing range of motion on principal component scores for vertebrae. Each regression was run twice for the joint cranial to and then caudal to the vertebra. Rotation excursions are the differences between maximum and minimum angular values, while mean dorsoventral flexion is the average/midpoint between the maximum and minimum value. Only significant terms are shown. An adjusted R-squared and p-value is given for each model, and for each term the value of the coefficient, the standard error, and the t value and its p-value are given.