Cannabinoid Administration Reduces Pain: A Meta-Analysis and Meta-Regression Julio A. Yanes1,2,3, Zach E. McKinnell1,2,3, Meredith A. Reid1,2,3, Jessica N. Busler1,2,3, Jesse S. Michel1, Melissa M. Pangelinan4, Matthew T. Sutherland5, Jared W. Younger6, Raul Gonzalez5, Jennifer L. Robinson1,2,3 1Department of Psychology, Auburn University, Auburn, AL, USA 2Auburn University Magnetic Resonance Imaging Research Center, Auburn University, Auburn, AL, USA 3Alabama Advanced Imaging Consortium, AL, USA 4School of Kinesiology, Auburn University, Auburn, AL, USA 5Department of Psychology, Florida International University, Miami, FL, USA 6Department of Psychology, University of Alabama Birmingham, Birmingham, AL, USA