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臺大管理論叢

27

卷第

4

91

6 D&O

保險對信用評等影響之迴歸結果:採用

Heckman

兩階段估計法

預期符號

係數    

p

信用評等模型

DO

?

-1.756

(0.000)***

Block

?

-0.006

(0.004)***

Insiderown

?

-0.011

(0.000)***

Instown

?

-0.008

(0.001)***

Deviation

+

0.003

(0.173)

Family

?

0.041

(0.267)

Board

?

-0.020

(0.030)**

Inddir

-

-2.431

(0.000)***

Dual

+

0.138

(0.000)***

Inddir_Expert

-

-0.101

(0.012)**

Pledge

+

0.010

(0.000)***

CEOturn

+

0.100

(0.000)***

CFOturn

+

0.129

(0.000)***

Size

-

-0.732

(0.000)***

ROA

-

-8.396

(0.000)***

Lev

+

3.771

(0.000)***

Loss

+

0.480

(0.000)***

Interest_inten

-

0.000

(0.788)

PPE_inten

-

1.418

(0.000)***

Hazard

?

1.024

(0.000)***

Year and Industry dummies

Included

D&O

保險選擇模型

Beta

+

0.062

(0.454)

ROA

-

-2.615

(0.000)***

Lev

+

0.159

(0.249)

Restate

+

0.131

(0.312)

MB

+

0.089

(0.000)***

GDR

+

0.182

(0.122)

ECB

+

-0.048

(0.622)

Tech

+

0.937

(0.009)***

Stock

+

0.095

(0.010)***

Size

?

0.105

(0.002)***

Inddir

+

-0.921

(0.220)

Control

?

-0.013

(0.000)***

Controlown

?

-0.003

(0.027)**

Mgtown

?

0.031

(0.002)***

Bonus

?

0.130

(0.000)***

Wald

χ

2

3317.07

(0.000)***

Pseudo

R

2

0.2281

樣本數

4,150

註:

***

**

*

分別代表雙尾

1%

5%

10%

的顯著水準,變數定義請參考附錄。