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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