Table 2.

Results of regression analysis.

Variables		Team knowledge creation
		M1	M2	M3	M4	M5
Control variables	Constant	3.30∗∗	3.11∗∗	3.01∗∗	2.26∗∗	2.12∗∗
	Gender	0.23	0.21	0.17	0.16	0.16
	Years after gaining Ph.D.	-0.27∗	-0.26∗	-0.17∗	-0.11	-0.10
	Proportion of first authored papers	-0.63	-0.34	-0.11	-0.02	0.19
	Proportion of last authored papers	-0.30	-0.07	0.26	0.33	0.40
	Tie strength	0.48∗∗	0.31∗	0.26∗∗	0.45∗∗	0.34∗∗
Predictive variables	Tie stability		0.31∗	0.81∗∗		0.25∗∗
	Tie stability2 (H1)			-0.43∗∗		-0.12
	Structural holes (H2)				-0.81∗∗	-0.83∗∗
	Tie stability∗structural holes					-0.25∗∗
	Tie stability2∗structural holes (H3)					0.13∗
	Pseudo R2	0.03	0.04	0.10	0.18	0.20
	ΔPseudo R2		0.01	0.06		0.02
	LR chi2	27.57∗∗	32.77∗∗	77.83∗∗	138.76∗∗	155.99∗∗

N = 111, ^∗p < 0.05 (two-tailed test), ^∗∗p < 0.01 (two-tailed test).