highly significantp = 0.000028737
Consistently, a drop in dispersion test showed a highly significant decrease of dispersion upon incorporation of mean intraoperative dBP, liquid balance of length of surgery into the regression formula (F statistic 8.3912, p = 0.000028737), while the addition of mean intraoperative MAP had no further significant effect (F statistic 2.989612, p = 0.085425).