The adjusted R2 represents the proportion of variance accounted for by the model, corrected for the number of predictors included in the model. For each model, the degrees of freedom, adjusted R2, X2, and corresponding p-value are reported. No reliable predictors were found for those models containing only an intercept.

另外，自由度、调整的决定系数，X2  P值有什么意义？

proportion of variance 是方差比例还是什么？

RMANIPmodels accounts for the largest proportion of variability   是不是说 RMANIP模型有最大的变异比例，，

多谢了