Methods The rabbit model of mitomycin C extravasation was made and managed by different methods. The therapeutic efficacy in each group was assessed by using regression index and regression time.

Based on the technical parameters for the performance of engines, the economical index of engines is predicted and analyzed by the theory of fuzzy linear regression.

The criteria of serum lipdemia was affected by mean artery pressure, age, weight and body weight index by stepwise regression analysis.