Minh bạch và công bố thông tin của các công ty niêm yết trên thị trường chứng khoán Việt Nam - 31

L.CS_CBTT

------------------------------------------------------------------------------

b = consistent under Ho and Ha; obtained from xtreg B = inconsistent under Ha, efficient under Ho; obtained from xtreg

Test: Ho: difference in coefficients not systematic chi2(11) = (b-B)'[(V_b-V_B)^(-1)](b-B)

= 676.48

Prob>chi2 = 0.0000

. esttab REM_CB1 REM_CB2 REM_CB3 REM_CB4 REM_CB5, r2 star(* 0.1 ** 0.05 *** 0.01) brackets nogap compress


---------------------------------------------------------------------------

(1)

(2)

(3)

(4)

(5)

CS_CBTT

CS_CBTT

CS_CBTT

CS_CBTT

CS_CBTT

---------------------------------------------------------------------------

HDQT

0.0808

0.0228

0.0163

0.0133

0.0250


[0.76]

[0.21]

[0.15]

[0.12]

[0.23]

KTGD

-1.242***

-0.544

-0.507

-0.522

-0.536


[-3.34]

[-1.54]

[-1.45]

[-1.48]

[-1.52]

TVDL

0.583***

0.348**

0.354**

0.358**

0.345**


[3.57]

[2.29]

[2.39]

[2.41]

[2.27]

QMCT

0.838***

0.211

0.155

0.161

0.205


[4.94]

[1.45]

[1.34]

[1.37]

[1.41]

DBTC

-2.130**

-1.059

-0.934

-0.965

-1.033


[-2.25]

[-1.33]

[-1.22]

[-1.25]

[-1.30]

SHQT

0.0119

0.00230


0.00266

0.00259


[1.26]

[0.28]


[0.32]

[0.31]

SHNN

0.0544***

0.0304**

0.0278**

0.0280**

0.0314***


[4.10]

[2.57]

[2.39]

[2.40]

[2.69]

ROA

3.746**

5.591***

5.694***

5.679***

5.809***


[2.29]

[3.27]

[3.34]

[3.32]

[3.51]

TOBIN_Q

0.233

0.0738

0.0822

0.0794



[1.38]

[0.52]

[0.58]

[0.56]


CTKT

-0.115

-0.564



-0.565


[-0.24]

[-1.40]



[-1.40]

SGDCK

-0.399

0.135



0.153


[-0.80]

[0.35]



[0.40]

L.CS_CBTT


0.533***

0.532***

0.531***

0.533***



[19.43]

[19.40]

[19.36]

[19.44]

BGD


0.218**

0.213**

0.212**

0.219**



[2.53]

[2.52]

[2.50]

[2.55]

_cons

39.13***

22.92***

24.48***

24.31***

23.10***


[9.27]

[6.18]

[7.90]

[7.73]

[6.25]

---------------------------------------------------------------------------

N

1452

968

968

968

968

R-sq






---------------------------------------------------------------------------

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Minh bạch và công bố thông tin của các công ty niêm yết trên thị trường chứng khoán Việt Nam - 31

t statistics in brackets

* p<0.1, ** p<0.05, *** p<0.01

. esttab FEM_CB1 FEM_CB2 FEM_CB3 FEM_CB4 FEM_CB5, r2 star(* 0.1 ** 0.05 *** 0.01) brackets nogap compress


---------------------------------------------------------------------------

(1)

(2)

(3)

(4)

(5)

CS_CBTT

CS_CBTT

CS_CBTT

CS_CBTT

CS_CBTT

---------------------------------------------------------------------------

HDQT

0.143

0.0266

0.0252

0.0246

0.0194


[1.08]

[0.15]

[0.14]

[0.14]

[0.11]

KTGD

-1.904***

-2.304***

-2.291***

-2.294***

-2.265***


[-3.65]

[-2.90]

[-2.89]

[-2.89]

[-2.86]

TVDL

0.363

-0.155

-0.150

-0.150

-0.156


[1.55]

[-0.41]

[-0.40]

[-0.40]

[-0.41]

QMCT

2.281***

2.177**

2.164**

2.160**

2.162**


[4.44]

[2.38]

[2.38]

[2.37]

[2.37]

DBTC

-2.737

-3.644

-3.608

-3.583

-3.953


[-1.61]

[-1.36]

[-1.36]

[-1.34]

[-1.49]

SHQT

0.0116

-0.00145


-0.00186

-0.000918


[0.78]

[-0.07]


[-0.09]

[-0.05]

SHNN

0.0851***

0.0580*

0.0573*

0.0575*

0.0570*


[4.03]

[1.73]

[1.72]

[1.72]

[1.70]

ROA

0.726

1.258

1.216

1.209

1.141


[0.39]

[0.56]

[0.54]

[0.54]

[0.51]

TOBIN_Q

0.181

-0.323

-0.325

-0.326



[0.81]

[-0.79]

[-0.80]

[-0.80]


CTKT

0.872

-0.519



-0.537


[1.00]

[-0.42]



[-0.44]

SGDCK

.

.



.


.

.



.

L.CS_CBTT


-0.332***

-0.333***

-0.333***

-0.332***



[-7.46]

[-7.51]

[-7.50]

[-7.47]

BGD


0.458**

0.455**

0.456**

0.451**



[2.24]

[2.23]

[2.23]

[2.20]

_cons

-0.761

24.19

24.43

24.56

24.48


[-0.05]

[0.99]

[1.01]

[1.01]

[1.00]

---------------------------------------------------------------------------

N

1452

968

968

968

968

R-sq

0.063

0.145

0.145

0.145

0.144

---------------------------------------------------------------------------

t statistics in brackets

* p<0.1, ** p<0.05, *** p<0.01

PHAN TICH CHI PHI VON


. xtreg CPV_CSH CS_CBTT HDQT TVDL BGD QMCT DBTC SHQT SHNN ROA TOBIN_Q NAMNY SGDCK,

re

Random-effects GLS regression Number of obs = 1452

Group variable: CONGTY Number of groups = 484

R-sq: within = 0.0772 Obs per group: min = 3

between = 0.1636 avg = 3.0

overall = 0.0700 max = 3

Wald chi2(12) = 108.30

corr(u_i, X) = 0 (assumed) Prob > chi2 = 0.0000

------------------------------------------------------------------------------

CPV_CSH | Coef. Std. Err. z P>|z| [95% Conf. Interval]

-------------+----------------------------------------------------------------

CS_CBTT

|

.0001816

.000183

0.99

0.321

-.000177

.0005402

HDQT

|

-.0011299

.0007473

-1.51

0.131

-.0025946

.0003348

TVDL

|

-.0010601

.0009962

-1.06

0.287

-.0030126

.0008924

BGD

|

-.0001784

.0005859

-0.30

0.761

-.0013268

.00097

QMCT

|

.0074452

.0008864

8.40

0.000

.0057079

.0091825

DBTC

|

-.0175439

.005262

-3.33

0.001

-.0278572

-.0072306

SHQT

|

-.0000507

.0000541

-0.94

0.348

-.0001567

.0000553

SHNN

|

-.0000404

.0000771

-0.52

0.601

-.0001915

.0001108

ROA

|

-.0141745

.0127745

-1.11

0.267

-.0392121

.010863

TOBIN_Q

|

-.0003182

.0011029

-0.29

0.773

-.0024799

.0018435

NAMNY

|

.0009059

.0004051

2.24

0.025

.0001119

.0016999

SGDCK

|

-.0110564

.0025149

-4.40

0.000

-.0159855

-.0061272

_cons

|

-.1135584

.0227538

-4.99

0.000

-.1581551

-.0689617

-------------+----------------------------------------------------------------

sigma_u | 0

sigma_e | .03774167

rho | 0 (fraction of variance due to u_i)

------------------------------------------------------------------------------


. estimates store REM_C1


. xtreg CPV_CSH CS_CBTT HDQT TVDL BGD QMCT DBTC SHQT SHNN ROA TOBIN_Q NAMNY SGDCK,

fe

note: SGDCK omitted because of collinearity


Fixed-effects (within) regression Number of obs = 1452

Group variable: CONGTY Number of groups = 484


R-sq: within

=

0.1419

Obs

per

group:

min

=

3

between

=

0.0101




avg

=

3.0

overall

=

0.0231




max

=

3




F(11,957)

=

14.39

corr(u_i, Xb)

=

-0.8181

Prob > F

=

0.0000


------------------------------------------------------------------------------

CPV_CSH | Coef. Std. Err. t P>|t| [95% Conf. Interval]

-------------+----------------------------------------------------------------

CS_CBTT

|

-.0001359

.0003379

-0.40

0.688

-.000799

.0005271

HDQT

|

-.0015586

.0013965

-1.12

0.265

-.0042991

.0011819

TVDL

|

-.0016152

.0024053

-0.67

0.502

-.0063355

.0031051

BGD

|

.0002354

.0015244

0.15

0.877

-.0027562

.0032269

QMCT

|

.0093452

.0058025

1.61

0.108

-.0020419

.0207323

DBTC

|

-.0109585

.01779

-0.62

0.538

-.0458704

.0239535

SHQT

|

-.0000871

.0001533

-0.57

0.570

-.000388

.0002139

SHNN

|

-.0001369

.0002195

-0.62

0.533

-.0005676

.0002939

ROA

|

-.0225594

.0190851

-1.18

0.237

-.060013

.0148941

TOBIN_Q

|

-.0015645

.0022997

-0.68

0.496

-.0060775

.0029484

NAMNY

|

.0141213

.0013631

10.36

0.000

.0114463

.0167963

SGDCK

|

0

(omitted)





_cons

|

-.2343613

.1537762

-1.52

0.128

-.5361387

.0674161

-------------+----------------------------------------------------------------

sigma_u | .04074184

sigma_e | .03774167

rho | .53817105 (fraction of variance due to u_i)

------------------------------------------------------------------------------

F test that all u_i=0: F(483, 957) = 1.05 Prob > F = 0.2830

. estimates store FEM_C1


. xttest3

Modified Wald test for groupwise heteroskedasticity in fixed effect regression model

H0: sigma(i)^2 = sigma^2 for all i chi2 (484) = 27524.83

Prob>chi2 = 0.0000


. xtserial CPV_CSH CS_CBTT HDQT TVDL BGD QMCT DBTC SHQT SHNN ROA TOBIN_Q NAMNY SGDCK

Wooldridge test for autocorrelation in panel data H0: no first-order autocorrelation

F( 1, 483) = 39.045

Prob > F = 0.0000


. hausman FEM_C1 REM_C1

---- Coefficients ----

| (b) (B) (b-B) sqrt(diag(V_b-V_B))

| FEM_C1 REM_C1 Difference S.E.

-------------+---------------------------------------------------------------- CS_CBTT | -.0001359 .0001816 -.0003175 .0002841

HDQT | -.0015586 -.0011299 -.0004287 .0011797

TVDL | -.0016152 -.0010601 -.0005551 .0021893

BGD | .0002354 -.0001784 .0004138 .0014073

QMCT | .0093452 .0074452 .0019 .0057344

DBTC | -.0109585 -.0175439 .0065855 .016994

SHQT | -.0000871 -.0000507 -.0000363 .0001435

SHNN | -.0001369 -.0000404 -.0000965 .0002055

|

-.0225594

-.0141745

-.0083849

.0141794

TOBIN_Q

|

-.0015645

-.0003182

-.0012463

.0020179

NAMNY

|

.0141213

.0009059

.0132154

.0013015

ROA

------------------------------------------------------------------------------


b = consistent under Ho and Ha; obtained from xtreg B = inconsistent under Ha, efficient under Ho; obtained from xtreg

Test: Ho: difference in coefficients not systematic chi2(11) = (b-B)'[(V_b-V_B)^(-1)](b-B)

= 136.49

Prob>chi2 = 0.0000


. xtreg CPV_CSH CS_CBTT HDQT TVDL BGD QMCT DBTC SHQT SHNN TOBIN_Q NAMNY SGDCK, re


Random-effects GLS regression

Number of obs

=

1452

Group variable: CONGTY

Number of groups

=

484

R-sq: within = 0.0742

Obs per group: min

=

3

between = 0.1652

avg

=

3.0

overall = 0.0692

max

=

3


Wald chi2(11)

=

107.05

corr(u_i, X) = 0 (assumed)

Prob > chi2

=

0.0000

------------------------------------------------------------------------------

CPV_CSH | Coef. Std. Err. z P>|z| [95% Conf. Interval]

-------------+----------------------------------------------------------------

CS_CBTT

|

.0001582

.0001818

0.87

0.384

-.000198

.0005144

HDQT

|

-.0011053

.000747

-1.48

0.139

-.0025695

.0003588

TVDL

|

-.001052

.0009962

-1.06

0.291

-.0030046

.0009006

BGD

|

-.000213

.0005851

-0.36

0.716

-.0013599

.0009338

QMCT

|

.0074453

.0008865

8.40

0.000

.0057078

.0091827

DBTC

|

-.0159797

.00507

-3.15

0.002

-.0259168

-.0060426

SHQT

|

-.0000525

.0000541

-0.97

0.332

-.0001585

.0000535

SHNN

|

-.000044

.0000771

-0.57

0.568

-.000195

.0001071

TOBIN_Q

|

-.0006529

.001061

-0.62

0.538

-.0027324

.0014265

NAMNY

|

.0009027

.0004051

2.23

0.026

.0001087

.0016967

SGDCK

|

-.0111541

.0025136

-4.44

0.000

-.0160806

-.0062276

_cons

|

-.1131051

.022752

-4.97

0.000

-.1576982

-.068512

-------------+----------------------------------------------------------------

sigma_u | 0

sigma_e | .03774949

rho | 0 (fraction of variance due to u_i)

------------------------------------------------------------------------------


. estimates store REM_C2


. xtreg CPV_CSH CS_CBTT HDQT TVDL BGD QMCT DBTC SHQT SHNN TOBIN_Q NAMNY SGDCK, fe

note: SGDCK omitted because of collinearity


Fixed-effects (within) regression Number of obs = 1452

Group variable: CONGTY Number of groups = 484


R-sq: within = 0.1407 Obs per group: min = 3

=

0.0076


avg

=

3.0

overall

=

0.0210


max

=

3




F(10,958)


=

15.68

corr(u_i, Xb)

=

-0.8182

Prob > F


=

0.0000

between


------------------------------------------------------------------------------

CPV_CSH | Coef. Std. Err. t P>|t| [95% Conf. Interval]

-------------+----------------------------------------------------------------

CS_CBTT

|

-.0001517

.0003377

-0.45

0.653

-.0008143

.000511

HDQT

|

-.0016436

.0013949

-1.18

0.239

-.0043811

.0010938

TVDL

|

-.0016307

.0024058

-0.68

0.498

-.0063519

.0030905

BGD

|

.000329

.0015227

0.22

0.829

-.0026592

.0033171

QMCT

|

.0084025

.0057486

1.46

0.144

-.0028788

.0196839

DBTC

|

-.0069786

.0174721

-0.40

0.690

-.0412667

.0273095

SHQT

|

-.0000889

.0001534

-0.58

0.562

-.0003899

.0002121

SHNN

|

-.000115

.0002187

-0.53

0.599

-.0005443

.0003143

TOBIN_Q

|

-.0017466

.002295

-0.76

0.447

-.0062504

.0027572

NAMNY

|

.0142641

.001358

10.50

0.000

.011599

.0169291

SGDCK

|

0

(omitted)





_cons

|

-.2114725

.1525838

-1.39

0.166

-.5109095

.0879645

-------------+----------------------------------------------------------------

sigma_u | .04081806

sigma_e | .03774949

rho | .53899699 (fraction of variance due to u_i)

------------------------------------------------------------------------------

F test that all u_i=0: F(483, 958) = 1.05 Prob > F = 0.2830


. estimates store FEM_C2


. xttest3

Modified Wald test for groupwise heteroskedasticity in fixed effect regression model


H0: sigma(i)^2 = sigma^2 for all i chi2 (484) = 28090.69

Prob>chi2 = 0.0000


. xtserial CPV_CSH CS_CBTT HDQT TVDL BGD QMCT DBTC SHQT SHNN TOBIN_Q NAMNY SGDCK

Wooldridge test for autocorrelation in panel data H0: no first-order autocorrelation

F( 1, 483) = 39.291

Prob > F = 0.0000


. hausman FEM_C2 REM_C2

---- Coefficients ----

| (b) (B) (b-B) sqrt(diag(V_b-V_B))

| FEM_C2 REM_C2 Difference S.E.

-------------+---------------------------------------------------------------- CS_CBTT | -.0001517 .0001582 -.0003099 .0002846

HDQT | -.0016436 -.0011053 -.0005383 .001178

TVDL | -.0016307 -.001052 -.0005786 .0021898

BGD | .000329 -.000213 .000542 .0014057

QMCT | .0084025 .0074453 .0009572 .0056799

|

-.0069786

-.0159797

.0090011

.0167204

SHQT

|

-.0000889

-.0000525

-.0000364

.0001435

SHNN

|

-.000115

-.000044

-.000071

.0002047

TOBIN_Q

|

-.0017466

-.0006529

-.0010937

.002035

NAMNY

|

.0142641

.0009027

.0133613

.0012962

DBTC

------------------------------------------------------------------------------


b = consistent under Ho and Ha; obtained from xtreg B = inconsistent under Ha, efficient under Ho; obtained from xtreg

Test: Ho: difference in coefficients not systematic chi2(10) = (b-B)'[(V_b-V_B)^(-1)](b-B)

= 136.15

Prob>chi2 = 0.0000


. xtreg CPV_CSH CS_CBTT TVDL QMCT DBTC SHQT SHNN ROE NAMNY SGDCK, re


Random-effects GLS regression

Number of obs

=

1452

Group variable: CONGTY

Number of groups

=

484

R-sq: within = 0.0831

Obs per group: min

=

3

between = 0.1614

avg

=

3.0

overall = 0.0686

max

=

3


Wald chi2(9)

=

106.23

corr(u_i, X) = 0 (assumed)

Prob > chi2

=

0.0000


------------------------------------------------------------------------------

CPV_CSH | Coef. Std. Err. z P>|z| [95% Conf. Interval]

-------------+----------------------------------------------------------------

CS_CBTT

|

.0001568

.0001807

0.87

0.386

-.0001974

.000511

TVDL

|

-.0011401

.0009943

-1.15

0.252

-.0030888

.0008087

QMCT

|

.0070329

.0007874

8.93

0.000

.0054897

.0085762

DBTC

|

-.0164254

.0050179

-3.27

0.001

-.0262604

-.0065904

SHQT

|

-.0000583

.0000538

-1.09

0.278

-.0001637

.000047

SHNN

|

-.0000629

.0000749

-0.84

0.401

-.0002096

.0000839

ROE

|

-.007247

.0048165

-1.50

0.132

-.0166871

.002193

NAMNY

|

.000937

.0004035

2.32

0.020

.0001463

.0017278

SGDCK

|

-.0102582

.0024081

-4.26

0.000

-.014978

-.0055384

_cons

|

-.1094213

.0208252

-5.25

0.000

-.150238

-.0686046

-------------+----------------------------------------------------------------

sigma_u | 0

sigma_e | .03770244

rho | 0 (fraction of variance due to u_i)

------------------------------------------------------------------------------


. estimates store REM_C3


. xtreg CPV_CSH CS_CBTT TVDL QMCT DBTC SHQT SHNN ROE NAMNY SGDCK, fe

note: SGDCK omitted because of collinearity


Fixed-effects (within) regression Number of obs = 1452

Group variable: CONGTY Number of groups = 484

R-sq: within = 0.1410 Obs per group: min = 3

=

0.0153


avg

=

3.0

overall

=

0.0261


max

=

3




F(8,960)


=

19.70

corr(u_i, Xb)

=

-0.8217

Prob > F


=

0.0000

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