“八五”投资评估系列报告之六──“八五”投资效益述评文／杨萍一、宏观投资效益有所改善，综合投入产出水平略有提高“八五”以来，反映宏观投资效益及综合投人产出水平的主要指标在数值上有不同程度的提高。“八五”前四年投资效益系数平均为０．６２６，超过“七五”... Investment Earnings in the Eighth Five-Year Plan Period - Comment on Investment Benefit in the Eighth Five-Year Plan Period / Yang Ping First, the macroeconomic efficiency has been improved, and the comprehensive input-output level has been slightly raised since the “Eighth Five-Year Plan”, reflecting the macroeconomic benefits And the main indicators of the level of comprehensive input and output have different degrees of increase in value. The average investment efficiency coefficient for the first five years of the Eighth Five-year Plan period was 0.626, exceeding the “Seventh Five-Year Plan” ...