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Table 2 TDF identified and the corresponding key themes that evolved

From: General practitioner views on the determinants of test ordering: a theory-based qualitative approach to the development of an intervention to improve immunoglobulin requests in primary care

TDF

Themes

Knowledgea

â–ª Limited knowledge of when to use immunoglobulin tests effectively.

â–ª GPs expressed difficulty with interpreting the results (particularly borderline abnormal results).

â–ª Lack of knowledge of how to effectively manage patients when the result is abnormal (when to refer).

Environmental context and resources

â–ª Lack of clear guidelines on when to use an immunoglobulin test in primary care.

â–ª Need for instructions on when to refer patients with abnormal results.

Beliefs about consequences

â–ª Excessive follow-up workload that comes with doing an immunoglobulin test.

Beliefs about capabilities

â–ª Feel they are poor at triaging patients for potential myeloma.

â–ª GPs find interpreting immunoglobulin results difficult.

â–ª Concern at what to do with an abnormal test result, in particular, borderline abnormal results.

Social/professional role

â–ª Happy to do the tests for specialist monitoring purposes.

â–ª Many GPs feel it is not a common test in primary care.

Memory, attention and decision process

â–ª A follow-up test performed on the basis of results of another test.

â–ª Not a priority in primary care.

â–ª Older patients with chronic back pain trigger the test for many.

â–ª Small minority use them regularly for screening.

Behavioural regulation

â–ª Education and guidelines mentioned the most.

â–ª Electronic strategy highlighted as feasible/system-level strategy.

â–ª Multidisciplinary approach.

  1. aKnowledge and skills were merged due to overlapping constructs