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Table 8 General Linear Model, Analysis of Covariance, Hair Assay Outcome by Color, Dose, Dose Duration, and Age, VPA.

From: The concentration of three anti-seizure medications in hair: the effects of hair color, controlling for dose and age

Source Type III Sum of Squares df Mean Square F Sig. Eta2
Corrected Model 299.12 6 49.85 11.38 .000 .674
Intercept 10.52 1 10.52 2.40 .131 .068
VPADOSE 61.03 1 61.03 13.93 .001 .297
DOSEDUR 11.55 1 11.55 2.64 .114 .074
AGE 23.35 1 23.35 5.33 .027 .139
COLOR 51.16 3 17.05 3.892 .017 .264
Error 144.59 33 4.38    
Total 3143.34 40     
Corrected Total 443.71 39