Table VI OLS results for hypothesized...

Table VI

OLS results for hypothesized effects

	Dependent variable: perceived supplier performance
	Model 1		Model 2
	Coefficient	t-value	Coefficient	t-value
Main effects
Definition of responsibility (DR)	0.17	3.78***	0.12	2.72**
Performance criteria (PC)	0.25	7.14***	0.25	7.15***
Incentives (IN)	0.24	6.77***	0.22	6.39***
Follow-up management (FM)	0.18	4.72***	0.18	4.92***
Service complexity (SC)			0.06	1.54
Interaction terms
DR×SC			−0.01	−0.41
PC×SC			−0.07	−2.52*
IN×SC			0.06	2.79**
FM×SC			0.06	2.54*
Control variables
Perceived economic value	0.11	2.70**	0.08	2.03*
Switching costs	0.03	0.92	0.02	0.52
Relationship bonds	0.05	1.31	0.02	0.77
Model fit
R²	0.66		0.70
Adjusted R²	0.65		0.68
F-statistic	46.61***		32.62***

	Dependent variable: perceived supplier performance
	Model 1		Model 2
	Coefficient	t-value	Coefficient	t-value
Main effects
Definition of responsibility (DR)	0.17	3.78***	0.12	2.72**
Performance criteria (PC)	0.25	7.14***	0.25	7.15***
Incentives (IN)	0.24	6.77***	0.22	6.39***
Follow-up management (FM)	0.18	4.72***	0.18	4.92***
Service complexity (SC)			0.06	1.54
Interaction terms
DR×SC			−0.01	−0.41
PC×SC			−0.07	−2.52*
IN×SC			0.06	2.79**
FM×SC			0.06	2.54*
Control variables
Perceived economic value	0.11	2.70**	0.08	2.03*
Switching costs	0.03	0.92	0.02	0.52
Relationship bonds	0.05	1.31	0.02	0.77
Model fit
R²	0.66		0.70
Adjusted R²	0.65		0.68
F-statistic	46.61***		32.62***

Notes: *p<0.05; **p<0.01; ***p<0.001

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