As PointZeroTwo details out while in the comments, the code might be enhanced so it might return successful/failure outcome. You may see a demo on this jsFiddle. Random-intercept variance of my Linear Mixed Design is zero, does that suggest I must use an easier design? Typically additionally, you will find https://landenfctjy.ezblogz.com/71124980/considerations-to-know-about-read-more