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Table 3 shows the 3 step hierarchical regression an ie. Perception of efficiency and transparency of EP by suppli  regression analysis allows for the detection of the  ers. The 3 s  incremental value of the additio  variables, which in the case is the moderator — ease of use and the interacti  variables. For the efficiency model, the moderatin help explain significantly the changes in efficie  subjective norms, knowledge of EP and knowledge of GP exp  variation in efficiency perception.  ncy of EP. Atti  g and interaction variables do  alysis for two dependent variables  vep nal on  not  tude towards EP,  ains 89% of  the

Table 3 shows the 3 step hierarchical regression an ie. Perception of efficiency and transparency of EP by suppli regression analysis allows for the detection of the ers. The 3 s incremental value of the additio variables, which in the case is the moderator — ease of use and the interacti variables. For the efficiency model, the moderatin help explain significantly the changes in efficie subjective norms, knowledge of EP and knowledge of GP exp variation in efficiency perception. ncy of EP. Atti g and interaction variables do alysis for two dependent variables vep nal on not tude towards EP, ains 89% of the