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Hello, I am centering an independent variable about the grand mean and the result is a positive effect of my variable (ADHD-inattention) on nicotine dependence trend. The effect is positive. How do I interpret this? is it a unit change from the grand mean? However, as one can be below or above the grand mean, is it a unit change in the positive direction? |
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Centering does not change the interpretation. For a one unit change in ADHD, nicotine dependence increases beta. |
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