Table 3.

Factor structure of the ATCI-P (Sample 1 data)

Item		Factor 1: Interactional determinants	Factor 2: Practitioner determinants
ATCI-P 14	The GP believes that I have a role in assuring medication effectiveness (for example, to ensure the patient receives the optimal drug at the optimal dose etc.)	.938
ATCI-P 13	The GP believes that I have a role in assuring medication safety (for example, to identify drug interactions, adverse reactions, contraindications etc.)	.883
ATCI-P 15	My working together with the GP benefits the patient.	.747
ATCI-P 9	The GP and I have mutual respect for one another on a professional level.	.632
ATCI-P 8	Discussions with the GP help me provide better patient care.	.608
ATCI-P 2	The GP is open to working together with me on patients’ medication management.	.597
ATCI-P 11	My role and the GP’s role in patient care are clear.	.584
ATCI-P 10	The GP and I share common goals and objectives when caring for the patient.	.575
ATCI-P 1	The professional communication between myself and the GP is open and honest.	.531
ATCI-P 4	The GP has time to discuss with me matters relating to patients’ medication regimens.	.439
ATCI-P 6	I can trust the GP’s professional decisions.		-.901
ATCI-P 3	The GP delivers high quality health care to patients.		-.866
ATCI-P 5	The GP meets the professional expectations I have of him/her.		-.862
ATCI-P 12	I have confidence in the GP’s medical expertise.		-.853
ATCI-P 7	The GP actively addresses patients’ medical concerns.		-.802

Only loadings >.4 have been reported.