原检验结果是：Arellano-Bond test for AR(1) in first differences: z =  -1.59  Pr > z =  0.113
                 Arellano-Bond test for AR(2) in first differences: z =  -1.03  Pr > z =  0.304
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                Sargan test of overid. restrictions: chi2(10)   =  15.02  Prob > chi2 =  0.131


求教：如何使得检验结果显示保留4位小数？？