求翻译：腹腔镜组和开腹手术组比较，手术时间明显增加，术中出血量明显减少（P是什么意思？

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The peritoneoscope group and opens the abdomen surgery group comparison, the surgery time increases obviously, in the technique bleeds the quantity to reduce obviously (P<0.01); The peritoneoscope group and other two groups of comparisons, the complication formation rate reduces obviously (P<0

Laparoscopic and open surgery group, operation time increases significantly reduced intraoperative bleeding (P<0.01), laparoscopy and the other two groups, the complication rate decreased significantly (P<0.05), shortening the time in hospital (P<0.01), 3 groups in analgesic use, anus and n

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