According to the cut off score of hamilton depression scale score 7 score, we took all the patients into depression group and nondepression group.

• 按照汉密尔顿抑郁量表评分的划界分7分将所有患者分为抑郁组与非抑郁组，同理按照汉密尔顿焦虑量表评分的划界分6分将所有患者分为焦虑组与非焦虑组。 术后3月随访时再次对所有患者做出上述五项评分。