求翻译：第一大股东持股比例及其平方项的系数均为通过显著性检验，与综合绩效的相关关系不呈U型，假设4没有得到支持。借鉴其他文献的方法，本文将样本公司分为3组：第一组，第一大股东持股比例小于20%，占比为15.45%（第一大股东持股比例小于20%的公司占所有样本公司的比例，下同。）；第二组，第一大股东持股比例大于20%小于40%，占比为51.81%；第三组，第一大股东持股比例大于40%，占比为32.73%。将三组数据分别代入前文所述模型。具体过程略，本文仅分析回归结果。是什么意思？

The largest shareholder and the square of the coefficient of proportion by the test of significance are, and no correlation between the overall performance of U-shaped, hypothesis 4 was not supported. Drawing on other literature, and this article will sample companies into three groups: first group,

The first major shareholders and the square of the ratio is used for both visibility through testing, and integrated performance correlation U type, on the assumption that no petition 4 was not supported. learn from the way other literature, this article will sample Company divided into 3 groups: th

The first major stockholder owns stocks the proportion and a square coefficient for through the significance examination, does not assume U with the synthesis achievements correlational dependence, the supposition 4 has not had the support.Profits from other literature the method, this article divid

And its largest shareholder stake square of the coefficient is to pass the test of significance, and general performance of the relevant relationship is u-shaped, assuming 4 did not receive support. The experience of other literature, this article will sample company is divided into 3 groups: the fi

And its largest shareholder stake square of the coefficient is to pass the test of significance, and general performance of the relevant relationship is u-shaped, assuming 4 did not receive support. The experience of other literature, this article will sample company is divided into 3 groups: the fi