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Table 6 Estimation of productivity as measured by the number of SCI papers

From: The impact of graduate students on research productivity in Korea

Variable

Total

Humanities

Social sciences

Natural sciences

Engineering

Number of graduate students

0.003** (0.0001)

0.0001* (0.0001)

0.001* (0.0001)

0.005** (0.001)

0.002** (0.0001)

lncen

0.012** (0.0001)

0.002** (0.0001)

0.004** (0.001)

0.020 (0.001)

0.015** (0.001)

lnpri

0.007** (0.001)

0.001 (0.001)

0.003** (0.001)

0.004** (0.002)

0.009** (0.001)

lninner

0.005** (0.0001)

0.001* (0.0001)

0.002** (0.0001)

0.013** (0.001)

0.009** (0.001)

Gender (1 = Male)

0.025** (0.005)

−0.002 (0.002)

0.017** (0.005)

0.080** (0.018)

0.080** (0.020)

Age

0.009** (0.002)

0.000 (0.001)

0.004 (0.002)

0.002** (0.008)

0.028** (0.005)

Age2

−0.0001** (0.00001)

−0.0001 (0.0001)

−0.0001 (0.0001)

−0.0001** (0.00001)

−0.0001** (0.00001)

Nation(1 = Domestic Doctorates)

−0.046** (0.003)

−0.005* (0.002)

−0.026** (0.004)

−0.087** (0.012)

−0.090** (0.008)

NU(1 = National/Public Universities)

0.027** (0.004)

0.006** (0.002)

0.007 (0.004)

0.061** (0.013)

0.051** (0.009)

Region (1 = capital Area)

0.040** (0.003)

0.003 (0.002)

0.033** (0.004)

0.063** (0.013)

0.072** (0.009)

Intercept

0.382** (0.047)

0.005 (0.023)

0.172** (0.058)

0.458** (0.194)

0.921** (0.126)

  1. The value of () is Std. Err. ** p <0.01, * p <0.05