Table 4 Robust test: instrumental variable.

From: The impact of collaboration networks constructed through common project experience on research output

Dependent variable

TNum

TQuo

Vrs

 

(1)

(2)

(2)

Cen

0.020***

0.940***

0.029***

 

(3.06)

(4.64)

(3.18)

Tit

4.074***

138.958***

6.318***

 

(31.94)

(19.41)

(28.44)

Fund

0.084***

1.876***

0.089***

 

(10.92)

(7.47)

(10.24)

Time

2.530***

22.124

−0.353

 

(8.95)

(1.63)

(−0.59)

WHum

0.573***

4.331***

0.285***

 

(16.81)

(3.38)

(6.39)

KleibergenPaap rk Wald F

145.505

Year_FE

Yes

Yes

Yes

Discipline_FE

Yes

Yes

Yes

Funding_FE

Yes

Yes

Yes

Institution_FE

Yes

Yes

Yes

Adj. R2

0.084

0.037

0.048

N

42996

42996

42996

  1. All regressions include project start year, discipline type, funding type, and host institution fixed effects. Standard errors are clustered by institution. T statistic is presented in parenthesis. ***p < 0.01, **p < 0.05, *p < 0.1.
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