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Table 6 Robustness checks with alternative innovation measures

From: Stock liquidity, financial constraints, and innovation in Chinese SMEs

 

EXP_REVENUE

EXP_ASSET

APPLIED_PAT

Efficiency

CPQS

− 15.590***

− 0.041***

− 53.999***

− 1.323***

 

(2.974)

(0.010)

(13.190

(0.447)

TSHARE

0.004

0.000*

0.061*

0.003*

 

(0.007)

(0.000)

(0.033)

(0.001)

SHRHFD5

− 4.123**

− 0.019***

10.595

0.874***

 

(1.877)

(0.007)

(8.180)

(0.319)

TO

− 13.394***

− 0.029*

− 30.303

− 1.142

 

(4.082)

(0.017)

(24.380)

(0.803)

RET

− 1.927*

− 0.011***

4.847

0.323*

 

(1.071)

(0.004)

(6.040)

(0.165)

FREE

0.030**

0.000

0.120

0.002

 

(0.014)

(0.000)

(0.073)

(0.002)

VOL

0.176

0.001

− 0.142

0.003

 

(0.166)

(0.001)

(0.865)

(0.023)

EARN

2.155

0.012***

− 11.635*

− 0.015

 

(1.411)

(0.005)

(6.283)

(0.126)

INTAN

5.627***

− 0.002

− 5.954

− 0.170

 

(1.960)

(0.006)

(4.758)

(0.186)

LEV

− 7.771***

− 0.018**

6.355

0.138

 

(0.988)

(0.004)

(4.498)

(0.200)

ROE

− 13.982***

− 0.018***

5.612

− 0.112

 

(2.583)

(0.004)

(4.588)

(0.163)

Q

0.472***

0.002***

− 0.086

− 0.011

 

(0.084)

(0.000)

(0.399)

(0.011)

BTM

− 2.687***

− 0.021***

9.618***

0.573***

 

(0.852)

(0.003)

(3.058)

(0.170)

CAPITAL

7.428***

0.031***

29.187**

0.831***

 

(2.317)

(0.009)

(14.760)

(0.410)

SALES

− 0.014***

0.000

0.007

0.000

 

(0.003)

(0.000)

(0.008)

(0.000)

lnAGE

− 0.704

0.002

− 4.585*

− 0.031

 

(0.546)

(0.002)

(2.762)

(0.091)

CONSTANT

7.331***

0.014*

9.832

− 0.168

 

(1.994)

(0.007)

(7.592)

(0.284)

Year dummies

Yes

Yes

Yes

Yes

Industry dummies

Yes

Yes

Yes

Yes

N

4664

4662

4727

4664

Adj.R2

0.296

0.297

0.045

0.028

  1. This table presents the pooled OLS estimation results for linear relationships between the alternative firm innovation proxies and stock liquidity. The ratio of R&D expenditures and revenue (EXP_REVENUE) and the ratio of R&D expenditures and total assets (EXP_ASSET) are the proxies of innovation input, respectively, whereas the number of applied patents (APPLIED_PAT) is the innovation output. Innovation efficiency (Efficiency) is calculated by using the number of patents divided by the natural logarithm of R&D expenditures. The definition of all variables is provided in Appendix A. For brevity, year and industry dummies are suppressed and only double-clustered adjustments are reported in parentheses. N is the number of firm-year observations. ***, ** and * denote statistical significance at the 1%, 5% and 10% levels, respectively