变量

(1)

(2)

(3)

安庆市

昆山市

南通市

保质期

9.188%^**

2.947%

5.916%^**

(0.034)

(0.027)

(0.028)

信息关注

7.598%

30.717%^***

34.942%^***

(0.050 )

(0.026)

(0.030)

物价波动

25.553%^***

14.077%^***

4.556%

(0.037)

(0.046)

(0.055)

采购物资间隔

7.038%^**

1.890%

12.508%^***

(0.026)

(0.021)

(0.035)

控制变量

YES

YES

YES

卡方

108.83

(p = 0.000)

69.40

(p = 0.000)

92.13

(p = 0.000)

R²

0.604

0.412

0.575